diff --git a/packages/react-devtools-shared/src/__tests__/store-test.js b/packages/react-devtools-shared/src/__tests__/store-test.js
index c277f6f167d06..dec3c41c8f1b6 100644
--- a/packages/react-devtools-shared/src/__tests__/store-test.js
+++ b/packages/react-devtools-shared/src/__tests__/store-test.js
@@ -7,6 +7,8 @@
  * @flow
  */
 
+import {getVersionedRenderImplementation} from './utils';
+
 describe('Store', () => {
   let React;
   let ReactDOM;
@@ -37,13 +39,13 @@ describe('Store', () => {
     withErrorsOrWarningsIgnored = utils.withErrorsOrWarningsIgnored;
   });
 
+  const {render, unmount, createContainer} = getVersionedRenderImplementation();
+
   // @reactVersion >= 18.0
   it('should not allow a root node to be collapsed', () => {
     const Component = () => <div>Hi</div>;
 
-    act(() =>
-      legacyRender(<Component count={4} />, document.createElement('div')),
-    );
+    act(() => render(<Component count={4} />));
     expect(store).toMatchInlineSnapshot(`
       [root]
           <Component>
@@ -62,15 +64,13 @@ describe('Store', () => {
   it('should properly handle a root with no visible nodes', () => {
     const Root = ({children}) => children;
 
-    const container = document.createElement('div');
-
-    act(() => legacyRender(<Root>{null}</Root>, container));
+    act(() => render(<Root>{null}</Root>));
     expect(store).toMatchInlineSnapshot(`
       [root]
           <Root>
     `);
 
-    act(() => legacyRender(<div />, container));
+    act(() => render(<div />));
     expect(store).toMatchInlineSnapshot(`[root]`);
   });
 
@@ -93,17 +93,14 @@ describe('Store', () => {
     };
     const Child = () => null;
 
-    const container = document.createElement('div');
-
     act(() =>
-      legacyRender(
+      render(
         <>
           <React.Suspense fallback="Loading...">
             <Owner />
           </React.Suspense>
           <Parent />
         </>,
-        container,
       ),
     );
     expect(store).toMatchInlineSnapshot(`
@@ -119,9 +116,7 @@ describe('Store', () => {
     const Component = () => null;
     Component.displayName = '🟩💜🔵';
 
-    const container = document.createElement('div');
-
-    act(() => legacyRender(<Component />, container));
+    act(() => render(<Component />));
     expect(store).toMatchInlineSnapshot(`
       [root]
           <🟩💜🔵>
@@ -196,9 +191,7 @@ describe('Store', () => {
         new Array(count).fill(true).map((_, index) => <Child key={index} />);
       const Child = () => <div>Hi!</div>;
 
-      const container = document.createElement('div');
-
-      act(() => legacyRender(<Grandparent count={4} />, container));
+      act(() => render(<Grandparent count={4} />));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▾ <Grandparent>
@@ -214,7 +207,7 @@ describe('Store', () => {
                 <Child key="3">
       `);
 
-      act(() => legacyRender(<Grandparent count={2} />, container));
+      act(() => render(<Grandparent count={2} />));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▾ <Grandparent>
@@ -226,12 +219,13 @@ describe('Store', () => {
                 <Child key="1">
       `);
 
-      act(() => ReactDOM.unmountComponentAtNode(container));
+      act(() => unmount());
       expect(store).toMatchInlineSnapshot(``);
     });
 
     // @reactVersion >= 18.0
-    it('should support mount and update operations for multiple roots', () => {
+    // @reactVersion < 19
+    it('should support mount and update operations for multiple roots (legacy render)', () => {
       const Parent = ({count}) =>
         new Array(count).fill(true).map((_, index) => <Child key={index} />);
       const Child = () => <div>Hi!</div>;
@@ -285,6 +279,64 @@ describe('Store', () => {
       expect(store).toMatchInlineSnapshot(``);
     });
 
+    // @reactVersion >= 18.0
+    it('should support mount and update operations for multiple roots (createRoot)', () => {
+      const Parent = ({count}) =>
+        new Array(count).fill(true).map((_, index) => <Child key={index} />);
+      const Child = () => <div>Hi!</div>;
+
+      const containerA = document.createElement('div');
+      const containerB = document.createElement('div');
+
+      const rootA = ReactDOMClient.createRoot(containerA);
+      const rootB = ReactDOMClient.createRoot(containerB);
+
+      act(() => {
+        rootA.render(<Parent key="A" count={3} />);
+        rootB.render(<Parent key="B" count={2} />);
+      });
+      expect(store).toMatchInlineSnapshot(`
+        [root]
+          ▾ <Parent key="A">
+              <Child key="0">
+              <Child key="1">
+              <Child key="2">
+        [root]
+          ▾ <Parent key="B">
+              <Child key="0">
+              <Child key="1">
+      `);
+
+      act(() => {
+        rootA.render(<Parent key="A" count={4} />);
+        rootB.render(<Parent key="B" count={1} />);
+      });
+      expect(store).toMatchInlineSnapshot(`
+        [root]
+          ▾ <Parent key="A">
+              <Child key="0">
+              <Child key="1">
+              <Child key="2">
+              <Child key="3">
+        [root]
+          ▾ <Parent key="B">
+              <Child key="0">
+      `);
+
+      act(() => rootB.unmount());
+      expect(store).toMatchInlineSnapshot(`
+        [root]
+          ▾ <Parent key="A">
+              <Child key="0">
+              <Child key="1">
+              <Child key="2">
+              <Child key="3">
+      `);
+
+      act(() => rootA.unmount());
+      expect(store).toMatchInlineSnapshot(``);
+    });
+
     // @reactVersion >= 18.0
     it('should filter DOM nodes from the store tree', () => {
       const Grandparent = () => (
@@ -302,9 +354,7 @@ describe('Store', () => {
       );
       const Child = () => <div>Hi!</div>;
 
-      act(() =>
-        legacyRender(<Grandparent count={4} />, document.createElement('div')),
-      );
+      act(() => render(<Grandparent count={4} />));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▾ <Grandparent>
@@ -337,8 +387,7 @@ describe('Store', () => {
         </React.Fragment>
       );
 
-      const container = document.createElement('div');
-      act(() => legacyRender(<Wrapper shouldSuspense={true} />, container));
+      act(() => render(<Wrapper shouldSuspense={true} />));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▾ <Wrapper>
@@ -348,7 +397,7 @@ describe('Store', () => {
       `);
 
       act(() => {
-        legacyRender(<Wrapper shouldSuspense={false} />, container);
+        render(<Wrapper shouldSuspense={false} />);
       });
       expect(store).toMatchInlineSnapshot(`
         [root]
@@ -399,15 +448,13 @@ describe('Store', () => {
         </React.Fragment>
       );
 
-      const container = document.createElement('div');
       act(() =>
-        legacyRender(
+        render(
           <Wrapper
             suspendParent={false}
             suspendFirst={false}
             suspendSecond={false}
           />,
-          container,
         ),
       );
       expect(store).toMatchInlineSnapshot(`
@@ -425,13 +472,12 @@ describe('Store', () => {
                 <Component key="Unrelated at End">
       `);
       act(() =>
-        legacyRender(
+        render(
           <Wrapper
             suspendParent={false}
             suspendFirst={true}
             suspendSecond={false}
           />,
-          container,
         ),
       );
       expect(store).toMatchInlineSnapshot(`
@@ -449,13 +495,12 @@ describe('Store', () => {
                 <Component key="Unrelated at End">
       `);
       act(() =>
-        legacyRender(
+        render(
           <Wrapper
             suspendParent={false}
             suspendFirst={false}
             suspendSecond={true}
           />,
-          container,
         ),
       );
       expect(store).toMatchInlineSnapshot(`
@@ -473,13 +518,12 @@ describe('Store', () => {
                 <Component key="Unrelated at End">
       `);
       act(() =>
-        legacyRender(
+        render(
           <Wrapper
             suspendParent={false}
             suspendFirst={true}
             suspendSecond={false}
           />,
-          container,
         ),
       );
       expect(store).toMatchInlineSnapshot(`
@@ -497,13 +541,12 @@ describe('Store', () => {
                 <Component key="Unrelated at End">
       `);
       act(() =>
-        legacyRender(
+        render(
           <Wrapper
             suspendParent={true}
             suspendFirst={true}
             suspendSecond={false}
           />,
-          container,
         ),
       );
       expect(store).toMatchInlineSnapshot(`
@@ -514,13 +557,12 @@ describe('Store', () => {
                 <Loading key="Parent Fallback">
       `);
       act(() =>
-        legacyRender(
+        render(
           <Wrapper
             suspendParent={false}
             suspendFirst={true}
             suspendSecond={true}
           />,
-          container,
         ),
       );
       expect(store).toMatchInlineSnapshot(`
@@ -538,13 +580,12 @@ describe('Store', () => {
                 <Component key="Unrelated at End">
       `);
       act(() =>
-        legacyRender(
+        render(
           <Wrapper
             suspendParent={false}
             suspendFirst={false}
             suspendSecond={false}
           />,
-          container,
         ),
       );
       expect(store).toMatchInlineSnapshot(`
@@ -599,13 +640,12 @@ describe('Store', () => {
                 <Loading key="Parent Fallback">
       `);
       act(() =>
-        legacyRender(
+        render(
           <Wrapper
             suspendParent={false}
             suspendFirst={true}
             suspendSecond={true}
           />,
-          container,
         ),
       );
       expect(store).toMatchInlineSnapshot(`
@@ -658,13 +698,12 @@ describe('Store', () => {
                 <Component key="Unrelated at End">
       `);
       act(() =>
-        legacyRender(
+        render(
           <Wrapper
             suspendParent={false}
             suspendFirst={false}
             suspendSecond={false}
           />,
-          container,
         ),
       );
       expect(store).toMatchInlineSnapshot(`
@@ -743,9 +782,7 @@ describe('Store', () => {
         new Array(count).fill(true).map((_, index) => <Child key={index} />);
       const Child = () => <div>Hi!</div>;
 
-      act(() =>
-        legacyRender(<Grandparent count={2} />, document.createElement('div')),
-      );
+      act(() => render(<Grandparent count={2} />));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▾ <Grandparent>
@@ -816,9 +853,7 @@ describe('Store', () => {
       const foo = <Foo key="foo" />;
       const bar = <Bar key="bar" />;
 
-      const container = document.createElement('div');
-
-      act(() => legacyRender(<Root>{[foo, bar]}</Root>, container));
+      act(() => render(<Root>{[foo, bar]}</Root>));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▾ <Root>
@@ -829,7 +864,7 @@ describe('Store', () => {
                 <Component key="1">
       `);
 
-      act(() => legacyRender(<Root>{[bar, foo]}</Root>, container));
+      act(() => render(<Root>{[bar, foo]}</Root>));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▾ <Root>
@@ -870,15 +905,12 @@ describe('Store', () => {
         new Array(count).fill(true).map((_, index) => <Child key={index} />);
       const Child = () => <div>Hi!</div>;
 
-      const container = document.createElement('div');
-
       act(() =>
-        legacyRender(
+        render(
           <React.Fragment>
             <Parent count={1} />
             <Parent count={3} />
           </React.Fragment>,
-          container,
         ),
       );
       expect(store).toMatchInlineSnapshot(`
@@ -888,12 +920,11 @@ describe('Store', () => {
       `);
 
       act(() =>
-        legacyRender(
+        render(
           <React.Fragment>
             <Parent count={2} />
             <Parent count={1} />
           </React.Fragment>,
-          container,
         ),
       );
       expect(store).toMatchInlineSnapshot(`
@@ -902,12 +933,13 @@ describe('Store', () => {
           ▸ <Parent>
       `);
 
-      act(() => ReactDOM.unmountComponentAtNode(container));
+      act(() => unmount());
       expect(store).toMatchInlineSnapshot(``);
     });
 
     // @reactVersion >= 18.0
-    it('should support mount and update operations for multiple roots', () => {
+    // @reactVersion < 19
+    it('should support mount and update operations for multiple roots (legacy render)', () => {
       const Parent = ({count}) =>
         new Array(count).fill(true).map((_, index) => <Child key={index} />);
       const Child = () => <div>Hi!</div>;
@@ -947,6 +979,50 @@ describe('Store', () => {
       expect(store).toMatchInlineSnapshot(``);
     });
 
+    // @reactVersion >= 18.0
+    it('should support mount and update operations for multiple roots (createRoot)', () => {
+      const Parent = ({count}) =>
+        new Array(count).fill(true).map((_, index) => <Child key={index} />);
+      const Child = () => <div>Hi!</div>;
+
+      const containerA = document.createElement('div');
+      const containerB = document.createElement('div');
+
+      const rootA = ReactDOMClient.createRoot(containerA);
+      const rootB = ReactDOMClient.createRoot(containerB);
+
+      act(() => {
+        rootA.render(<Parent key="A" count={3} />);
+        rootB.render(<Parent key="B" count={2} />);
+      });
+      expect(store).toMatchInlineSnapshot(`
+        [root]
+          ▸ <Parent key="A">
+        [root]
+          ▸ <Parent key="B">
+      `);
+
+      act(() => {
+        rootA.render(<Parent key="A" count={4} />);
+        rootB.render(<Parent key="B" count={1} />);
+      });
+      expect(store).toMatchInlineSnapshot(`
+        [root]
+          ▸ <Parent key="A">
+        [root]
+          ▸ <Parent key="B">
+      `);
+
+      act(() => rootB.unmount());
+      expect(store).toMatchInlineSnapshot(`
+        [root]
+          ▸ <Parent key="A">
+      `);
+
+      act(() => rootA.unmount());
+      expect(store).toMatchInlineSnapshot(``);
+    });
+
     // @reactVersion >= 18.0
     it('should filter DOM nodes from the store tree', () => {
       const Grandparent = () => (
@@ -964,9 +1040,7 @@ describe('Store', () => {
       );
       const Child = () => <div>Hi!</div>;
 
-      act(() =>
-        legacyRender(<Grandparent count={4} />, document.createElement('div')),
-      );
+      act(() => render(<Grandparent count={4} />));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▸ <Grandparent>
@@ -1012,8 +1086,7 @@ describe('Store', () => {
         </React.Fragment>
       );
 
-      const container = document.createElement('div');
-      act(() => legacyRender(<Wrapper shouldSuspense={true} />, container));
+      act(() => render(<Wrapper shouldSuspense={true} />));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▸ <Wrapper>
@@ -1031,7 +1104,7 @@ describe('Store', () => {
       `);
 
       act(() => {
-        legacyRender(<Wrapper shouldSuspense={false} />, container);
+        render(<Wrapper shouldSuspense={false} />);
       });
       expect(store).toMatchInlineSnapshot(`
         [root]
@@ -1054,9 +1127,7 @@ describe('Store', () => {
         new Array(count).fill(true).map((_, index) => <Child key={index} />);
       const Child = () => <div>Hi!</div>;
 
-      act(() =>
-        legacyRender(<Grandparent count={2} />, document.createElement('div')),
-      );
+      act(() => render(<Grandparent count={2} />));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▸ <Grandparent>
@@ -1136,12 +1207,7 @@ describe('Store', () => {
 
       const ref = React.createRef();
 
-      act(() =>
-        legacyRender(
-          <Wrapper forwardedRef={ref} />,
-          document.createElement('div'),
-        ),
-      );
+      act(() => render(<Wrapper forwardedRef={ref} />));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▸ <Wrapper>
@@ -1207,15 +1273,13 @@ describe('Store', () => {
       const foo = <Foo key="foo" />;
       const bar = <Bar key="bar" />;
 
-      const container = document.createElement('div');
-
-      act(() => legacyRender(<Root>{[foo, bar]}</Root>, container));
+      act(() => render(<Root>{[foo, bar]}</Root>));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▸ <Root>
       `);
 
-      act(() => legacyRender(<Root>{[bar, foo]}</Root>, container));
+      act(() => render(<Root>{[bar, foo]}</Root>));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▸ <Root>
@@ -1264,7 +1328,7 @@ describe('Store', () => {
       const Parent = () => <Child />;
       const Child = () => null;
 
-      act(() => legacyRender(<SuspenseTree />, document.createElement('div')));
+      act(() => render(<SuspenseTree />));
       expect(store).toMatchInlineSnapshot(`
         [root]
           ▸ <SuspenseTree>
@@ -1328,7 +1392,7 @@ describe('Store', () => {
       const Parent = () => <Child />;
       const Child = () => null;
 
-      act(() => legacyRender(<Grandparent />, document.createElement('div')));
+      act(() => render(<Grandparent />));
 
       for (let i = 0; i < store.numElements; i++) {
         expect(store.getIndexOfElementID(store.getElementIDAtIndex(i))).toBe(i);
@@ -1342,8 +1406,8 @@ describe('Store', () => {
       const Child = () => null;
 
       act(() => {
-        legacyRender(<Grandparent />, document.createElement('div'));
-        legacyRender(<Grandparent />, document.createElement('div'));
+        render(<Grandparent />);
+        render(<Grandparent />);
       });
 
       for (let i = 0; i < store.numElements; i++) {
@@ -1358,12 +1422,11 @@ describe('Store', () => {
       const Child = () => null;
 
       act(() =>
-        legacyRender(
+        render(
           <React.Fragment>
             <Grandparent />
             <Grandparent />
           </React.Fragment>,
-          document.createElement('div'),
         ),
       );
 
@@ -1379,19 +1442,20 @@ describe('Store', () => {
       const Child = () => null;
 
       act(() => {
-        legacyRender(
+        render(
           <React.Fragment>
             <Grandparent />
             <Grandparent />
           </React.Fragment>,
-          document.createElement('div'),
         );
-        legacyRender(
+
+        createContainer();
+
+        render(
           <React.Fragment>
             <Grandparent />
             <Grandparent />
           </React.Fragment>,
-          document.createElement('div'),
         );
       });
 
@@ -1402,7 +1466,8 @@ describe('Store', () => {
   });
 
   // @reactVersion >= 18.0
-  it('detects and updates profiling support based on the attached roots', () => {
+  // @reactVersion < 19
+  it('detects and updates profiling support based on the attached roots (legacy render)', () => {
     const Component = () => null;
 
     const containerA = document.createElement('div');
@@ -1421,6 +1486,29 @@ describe('Store', () => {
     expect(store.rootSupportsBasicProfiling).toBe(false);
   });
 
+  // @reactVersion >= 18
+  it('detects and updates profiling support based on the attached roots (createRoot)', () => {
+    const Component = () => null;
+
+    const containerA = document.createElement('div');
+    const containerB = document.createElement('div');
+
+    const rootA = ReactDOMClient.createRoot(containerA);
+    const rootB = ReactDOMClient.createRoot(containerB);
+
+    expect(store.rootSupportsBasicProfiling).toBe(false);
+
+    act(() => rootA.render(<Component />));
+    expect(store.rootSupportsBasicProfiling).toBe(true);
+
+    act(() => rootB.render(<Component />));
+    act(() => rootA.unmount());
+    expect(store.rootSupportsBasicProfiling).toBe(true);
+
+    act(() => rootB.unmount());
+    expect(store.rootSupportsBasicProfiling).toBe(false);
+  });
+
   // @reactVersion >= 18.0
   it('should properly serialize non-string key values', () => {
     const Child = () => null;
@@ -1429,7 +1517,7 @@ describe('Store', () => {
     // This is pretty hacky.
     const fauxElement = Object.assign({}, <Child />, {key: 123});
 
-    act(() => legacyRender([fauxElement], document.createElement('div')));
+    act(() => render([fauxElement]));
     expect(store).toMatchInlineSnapshot(`
       [root]
           <Child key="123">
@@ -1488,15 +1576,13 @@ describe('Store', () => {
       </React.Fragment>
     );
 
-    const container = document.createElement('div');
-
     // Render once to start fetching the lazy component
-    act(() => legacyRender(<App />, container));
+    act(() => render(<App />));
 
     await Promise.resolve();
 
     // Render again after it resolves
-    act(() => legacyRender(<App />, container));
+    act(() => render(<App />));
 
     expect(store).toMatchInlineSnapshot(`
       [root]
@@ -1543,6 +1629,7 @@ describe('Store', () => {
     });
 
     // @reactVersion >= 18.0
+    // @reactVersion < 19
     it('should support Lazy components (legacy render)', async () => {
       const container = document.createElement('div');
 
@@ -1612,6 +1699,7 @@ describe('Store', () => {
     });
 
     // @reactVersion >= 18.0
+    // @reactVersion < 19
     it('should support Lazy components that are unmounted before they finish loading (legacy render)', async () => {
       const container = document.createElement('div');
 
@@ -1634,6 +1722,7 @@ describe('Store', () => {
     });
 
     // @reactVersion >= 18.0
+    // @reactVersion < 19
     it('should support Lazy components that are unmounted before they finish loading in (createRoot)', async () => {
       const container = document.createElement('div');
       const root = ReactDOMClient.createRoot(container);
@@ -1665,10 +1754,9 @@ describe('Store', () => {
         console.warn('test-only: render warning');
         return null;
       }
-      const container = document.createElement('div');
 
       withErrorsOrWarningsIgnored(['test-only:'], () => {
-        act(() => legacyRender(<Example />, container));
+        act(() => render(<Example />));
       });
 
       expect(store).toMatchInlineSnapshot(`
@@ -1678,7 +1766,7 @@ describe('Store', () => {
       `);
 
       withErrorsOrWarningsIgnored(['test-only:'], () => {
-        act(() => legacyRender(<Example rerender={1} />, container));
+        act(() => render(<Example rerender={1} />));
       });
 
       expect(store).toMatchInlineSnapshot(`
@@ -1697,10 +1785,9 @@ describe('Store', () => {
         });
         return null;
       }
-      const container = document.createElement('div');
 
       withErrorsOrWarningsIgnored(['test-only:'], () => {
-        act(() => legacyRender(<Example />, container));
+        act(() => render(<Example />));
       });
 
       expect(store).toMatchInlineSnapshot(`
@@ -1710,7 +1797,7 @@ describe('Store', () => {
       `);
 
       withErrorsOrWarningsIgnored(['test-only:'], () => {
-        act(() => legacyRender(<Example rerender={1} />, container));
+        act(() => render(<Example rerender={1} />));
       });
 
       expect(store).toMatchInlineSnapshot(`
@@ -1739,11 +1826,10 @@ describe('Store', () => {
           });
           return null;
         }
-        const container = document.createElement('div');
 
         withErrorsOrWarningsIgnored(['test-only:'], () => {
           act(() => {
-            legacyRender(<Example />, container);
+            render(<Example />);
           }, false);
         });
         flushPendingBridgeOperations();
@@ -1760,7 +1846,7 @@ describe('Store', () => {
               <Example> ✕⚠
         `);
 
-        act(() => ReactDOM.unmountComponentAtNode(container));
+        act(() => unmount());
         expect(store).toMatchInlineSnapshot(``);
       });
 
@@ -1778,15 +1864,12 @@ describe('Store', () => {
           return null;
         }
 
-        const container = document.createElement('div');
-
         withErrorsOrWarningsIgnored(['test-only:'], () => {
           act(() => {
-            legacyRender(
+            render(
               <>
                 <Example />
               </>,
-              container,
             );
           }, false);
           flushPendingBridgeOperations();
@@ -1797,12 +1880,11 @@ describe('Store', () => {
 
           // Before warnings and errors have flushed, flush another commit.
           act(() => {
-            legacyRender(
+            render(
               <>
                 <Example />
                 <Noop />
               </>,
-              container,
             );
           }, false);
           flushPendingBridgeOperations();
@@ -1823,14 +1905,13 @@ describe('Store', () => {
               <Noop>
         `);
 
-        act(() => ReactDOM.unmountComponentAtNode(container));
+        act(() => unmount());
         expect(store).toMatchInlineSnapshot(``);
       });
     });
 
     // @reactVersion >= 18.0
     it('from react get counted', () => {
-      const container = document.createElement('div');
       function Example() {
         return [<Child />];
       }
@@ -1841,7 +1922,7 @@ describe('Store', () => {
       withErrorsOrWarningsIgnored(
         ['Warning: Each child in a list should have a unique "key" prop'],
         () => {
-          act(() => legacyRender(<Example />, container));
+          act(() => render(<Example />));
         },
       );
 
@@ -1860,15 +1941,14 @@ describe('Store', () => {
         console.warn('test-only: render warning');
         return null;
       }
-      const container = document.createElement('div');
+
       withErrorsOrWarningsIgnored(['test-only:'], () => {
         act(() =>
-          legacyRender(
+          render(
             <React.Fragment>
               <Example />
               <Example />
             </React.Fragment>,
-            container,
           ),
         );
       });
@@ -1902,15 +1982,14 @@ describe('Store', () => {
         console.warn('test-only: render warning');
         return null;
       }
-      const container = document.createElement('div');
+
       withErrorsOrWarningsIgnored(['test-only:'], () => {
         act(() =>
-          legacyRender(
+          render(
             <React.Fragment>
               <Example />
               <Example />
             </React.Fragment>,
-            container,
           ),
         );
       });
@@ -1948,15 +2027,14 @@ describe('Store', () => {
         console.warn('test-only: render warning');
         return null;
       }
-      const container = document.createElement('div');
+
       withErrorsOrWarningsIgnored(['test-only:'], () => {
         act(() =>
-          legacyRender(
+          render(
             <React.Fragment>
               <Example />
               <Example />
             </React.Fragment>,
-            container,
           ),
         );
       });
@@ -2002,16 +2080,15 @@ describe('Store', () => {
         console.warn('test-only: render warning');
         return null;
       }
-      const container = document.createElement('div');
+
       withErrorsOrWarningsIgnored(['test-only:'], () => {
         act(() =>
-          legacyRender(
+          render(
             <React.Fragment>
               <ComponentWithError />
               <ComponentWithWarning />
               <ComponentWithWarningAndError />
             </React.Fragment>,
-            container,
           ),
         );
       });
@@ -2025,12 +2102,11 @@ describe('Store', () => {
 
       withErrorsOrWarningsIgnored(['test-only:'], () => {
         act(() =>
-          legacyRender(
+          render(
             <React.Fragment>
               <ComponentWithWarning />
               <ComponentWithWarningAndError />
             </React.Fragment>,
-            container,
           ),
         );
       });
@@ -2043,11 +2119,10 @@ describe('Store', () => {
 
       withErrorsOrWarningsIgnored(['test-only:'], () => {
         act(() =>
-          legacyRender(
+          render(
             <React.Fragment>
               <ComponentWithWarning />
             </React.Fragment>,
-            container,
           ),
         );
       });
@@ -2058,7 +2133,7 @@ describe('Store', () => {
       `);
 
       withErrorsOrWarningsIgnored(['test-only:'], () => {
-        act(() => legacyRender(<React.Fragment />, container));
+        act(() => render(<React.Fragment />));
       });
       expect(store).toMatchInlineSnapshot(`[root]`);
       expect(store.errorCount).toBe(0);
@@ -2086,9 +2161,7 @@ describe('Store', () => {
         );
       }
 
-      const container = document.createElement('div');
-      const root = ReactDOMClient.createRoot(container);
-      await actAsync(() => root.render(<App renderA={true} />));
+      await actAsync(() => render(<App renderA={true} />));
 
       expect(store).toMatchInlineSnapshot(`
           [root]
@@ -2097,7 +2170,7 @@ describe('Store', () => {
                   <ChildA>
         `);
 
-      await actAsync(() => root.render(<App renderA={false} />));
+      await actAsync(() => render(<App renderA={false} />));
 
       expect(store).toMatchInlineSnapshot(`
           [root]