[EuiInMemoryTable] Fixed data reset on selection change.

CHANGELOG.md

@@ -13,6 +13,7 @@
 
 **Bug Fixes**
 
+- Fixed `EuiInMemoryTable` data reset when filter is set and item is selected ([#3419](https://github.com/elastic/eui/pull/3419))
 - Fixed `EuiBadge` `iconOnClick` props makes badge text clickable ([#3392](https://github.com/elastic/eui/pull/3392))
 - Added `id` requirement if `label` is used in `EuiRadio` ([#3382](https://github.com/elastic/eui/pull/3382))
 - Fixed z-index issue in `EuiDatePicker` where it's popover would sit beneath other DOM siblings that had z-index applied ([#3376](https://github.com/elastic/eui/pull/3376))

src/components/basic_table/in_memory_table.tsx

@@ -270,16 +270,21 @@ export class EuiInMemoryTable<T> extends Component<
     }
 
     if (
-      (nextProps.search as EuiSearchBarProps) !==
+      (nextProps.search as EuiSearchBarProps) &&
       (prevState.prevProps.search as EuiSearchBarProps)
     ) {
-      return {
-        prevProps: {
-          ...prevState.prevProps,
-          search: nextProps.search,
-        },
-        query: getQueryFromSearch(nextProps.search, false),
-      };
+      const nextQuery = (nextProps.search as EuiSearchBarProps).query;
+      const prevQuery = (prevState.prevProps.search as EuiSearchBarProps).query;
+
+      if (nextQuery !== prevQuery) {
+        return {
+          prevProps: {
+            ...prevState.prevProps,
+            search: nextProps.search,
+          },
+          query: getQueryFromSearch(nextProps.search, false),
+        };
+      }
     }
     return null;
   }