diff --git a/x-pack/plugins/security_solution/public/management/pages/policy/view/policy_advanced.tsx b/x-pack/plugins/security_solution/public/management/pages/policy/view/policy_advanced.tsx
index b4b82b7f692b9..e4e03e9453f7a 100644
--- a/x-pack/plugins/security_solution/public/management/pages/policy/view/policy_advanced.tsx
+++ b/x-pack/plugins/security_solution/public/management/pages/policy/view/policy_advanced.tsx
@@ -48,7 +48,7 @@ export const AdvancedPolicyForms = React.memo(() => {
           />
         </h4>
       </EuiText>
-      <EuiPanel paddingSize="s">
+      <EuiPanel data-test-subj="advancedPolicyPanel" paddingSize="s">
         {AdvancedPolicySchema.map((advancedField, index) => {
           const configPath = advancedField.key.split('.');
           return (
@@ -114,7 +114,12 @@ const PolicyAdvanced = React.memo(
             </EuiText>
           }
         >
-          <EuiFieldText fullWidth value={value as string} onChange={onChange} />
+          <EuiFieldText
+            data-test-subj={configPath.join('.')}
+            fullWidth
+            value={value as string}
+            onChange={onChange}
+          />
         </EuiFormRow>
       </>
     );
diff --git a/x-pack/test/security_solution_endpoint/apps/endpoint/policy_details.ts b/x-pack/test/security_solution_endpoint/apps/endpoint/policy_details.ts
index f032416d2e7bb..b3c130ea1e5dc 100644
--- a/x-pack/test/security_solution_endpoint/apps/endpoint/policy_details.ts
+++ b/x-pack/test/security_solution_endpoint/apps/endpoint/policy_details.ts
@@ -52,6 +52,19 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
           policyInfo.packagePolicy.name
         );
       });
+
+      it('and the show advanced settings button is clicked', async () => {
+        await testSubjects.missingOrFail('advancedPolicyPanel');
+
+        let advancedPolicyButton = await pageObjects.policy.findAdvancedPolicyButton();
+        await advancedPolicyButton.click();
+
+        await testSubjects.existOrFail('advancedPolicyPanel');
+
+        advancedPolicyButton = await pageObjects.policy.findAdvancedPolicyButton();
+        await advancedPolicyButton.click();
+        await testSubjects.missingOrFail('advancedPolicyPanel');
+      });
     });
 
     describe('and the save button is clicked', () => {
@@ -98,7 +111,16 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
           pageObjects.endpointPageUtils.clickOnEuiCheckbox('policyLinuxEvent_file'),
           pageObjects.endpointPageUtils.clickOnEuiCheckbox('policyMacEvent_file'),
         ]);
+
+        const advancedPolicyButton = await pageObjects.policy.findAdvancedPolicyButton();
+        await advancedPolicyButton.click();
+
+        const advancedPolicyField = await pageObjects.policy.findAdvancedPolicyField();
+        await advancedPolicyField.clearValue();
+        await advancedPolicyField.click();
+        await advancedPolicyField.type('true');
         await pageObjects.policy.confirmAndSave();
+
         await testSubjects.existOrFail('policyDetailsSuccessMessage');
 
         const agentFullPolicy = await policyTestResources.getFullAgentPolicy(
@@ -191,6 +213,7 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
               linux: {
                 events: { file: false, network: true, process: true },
                 logging: { file: 'info' },
+                advanced: { agent: { connection_delay: 'true' } },
               },
               mac: {
                 events: { file: false, network: true, process: true },
diff --git a/x-pack/test/security_solution_endpoint/page_objects/policy_page.ts b/x-pack/test/security_solution_endpoint/page_objects/policy_page.ts
index 92571e5c27566..8bfbdc32452ee 100644
--- a/x-pack/test/security_solution_endpoint/page_objects/policy_page.ts
+++ b/x-pack/test/security_solution_endpoint/page_objects/policy_page.ts
@@ -77,6 +77,22 @@ export function EndpointPolicyPageProvider({ getService, getPageObjects }: FtrPr
       return await testSubjects.find('policyDetailsCancelButton');
     },
 
+    /**
+     * Finds and returns the Advanced Policy Show/Hide Button
+     */
+    async findAdvancedPolicyButton() {
+      await this.ensureIsOnDetailsPage();
+      return await testSubjects.find('advancedPolicyButton');
+    },
+
+    /**
+     * Finds and returns the linux connection_delay Advanced Policy field
+     */
+    async findAdvancedPolicyField() {
+      await this.ensureIsOnDetailsPage();
+      return await testSubjects.find('linux.advanced.agent.connection_delay');
+    },
+
     /**
      * ensures that the Details Page is the currently display view
      */