Fix #80369

src/vs/workbench/contrib/extensions/browser/extensionsActions.ts

@@ -1605,7 +1605,7 @@ export class ShowRecommendedExtensionsAction extends Action {
 		return this.viewletService.openViewlet(VIEWLET_ID, true)
 			.then(viewlet => viewlet as IExtensionsViewlet)
 			.then(viewlet => {
-				viewlet.search('@recommended ');
+				viewlet.search('@recommended ', true);
 				viewlet.focus();
 			});
 	}

src/vs/workbench/contrib/extensions/browser/extensionsViewlet.ts

@@ -59,11 +59,6 @@ import { RemoteNameContext } from 'vs/workbench/browser/contextkeys';
 import { ILabelService } from 'vs/platform/label/common/label';
 import { MementoObject } from 'vs/workbench/common/memento';
 
-interface SearchInputEvent extends Event {
-	target: HTMLInputElement;
-	immediate?: boolean;
-}
-
 const NonEmptyWorkspaceContext = new RawContextKey<boolean>('nonEmptyWorkspace', false);
 const DefaultViewsContext = new RawContextKey<boolean>('defaultExtensionViews', true);
 const SearchMarketplaceExtensionsContext = new RawContextKey<boolean>('searchMarketplaceExtensions', false);
@@ -488,12 +483,13 @@ export class ExtensionsViewlet extends ViewContainerViewlet implements IExtensio
 		return this.secondaryActions;
 	}
 
-	search(value: string): void {
+	search(value: string, refresh: boolean = false): void {
 		if (this.searchBox) {
-			const event = new Event('input', { bubbles: true }) as SearchInputEvent;
-			event.immediate = true;
-
-			this.searchBox.setValue(value);
+			if (this.searchBox.getValue() !== value) {
+				this.searchBox.setValue(value);
+			} else if (refresh) {
+				this.doSearch();
+			}
 		}
 	}
 

src/vs/workbench/contrib/extensions/common/extensions.ts

@@ -23,7 +23,7 @@ export const VIEW_CONTAINER: ViewContainer = Registry.as<IViewContainersRegistry
 export const EXTENSIONS_CONFIG = '.vscode/extensions.json';
 
 export interface IExtensionsViewlet extends IViewlet {
-	search(text: string): void;
+	search(text: string, refresh?: boolean): void;
 }
 
 export const enum ExtensionState {