don't set quick pick items every time value changes

src/vs/platform/quickinput/browser/quickPickPin.ts

@@ -30,9 +30,13 @@ export async function showWithPinnedItems(storageService: IStorageService, stora
 		}
 	});
 	quickPick.onDidChangeValue(async value => {
-		// Return pinned items if there is no search value
-		quickPick.items = value ? itemsWithoutPinned : itemsWithPinned;
+		// If the items are pinnable (top level quick pick), update items such that
+		// pinned are excluded from the search results
+		if (quickPick.items.some(i => i.buttons?.some(b => b.iconClass === pinButtonClass))) {
+			quickPick.items = value ? itemsWithoutPinned : itemsWithPinned;
+		}
 	});
+
 	quickPick.items = quickPick.value ? itemsWithoutPinned : itemsWithPinned;
 	quickPick.show();
 }

src/vs/workbench/contrib/tasks/browser/taskQuickPick.ts

@@ -284,8 +284,8 @@ export class TaskQuickPick extends Disposable {
 				// Proceed to second level of quick pick
 				if (selectedEntry && !selectedEntry.settingType && selectedEntry.task === null) {
 					// The user has chosen to go back to the first level
-					firstLevelTask = await this._doPickerFirstLevel(picker, (await this.getTopLevelEntries(defaultEntry)).entries);
 					picker.value = '';
+					firstLevelTask = await this._doPickerFirstLevel(picker, (await this.getTopLevelEntries(defaultEntry)).entries);
 				} else if (selectedEntry && Types.isString(selectedEntry.settingType)) {
 					picker.dispose();
 					return this.handleSettingOption(selectedEntry.settingType);