fix more

Author: adolgachev

src/cdk/menu/menu-bar.ts

@@ -63,14 +63,19 @@ export class CdkMenuBar extends CdkMenuBase implements AfterContentInit {
    */
   _handleKeyEvent(event: KeyboardEvent) {
     const keyManager = this.keyManager;
+
+    const element = this._elementRef.nativeElement;
+    const target = _getEventTarget(event) as HTMLElement;
+    if (target !== element && target.parentElement !== element) {
+      return;
+    }
+
     switch (event.keyCode) {
       case UP_ARROW:
       case DOWN_ARROW:
       case LEFT_ARROW:
       case RIGHT_ARROW:
-        const target = _getEventTarget(event) as HTMLElement;
-
-        if (!hasModifierKey(event) && target.parentElement === this._elementRef.nativeElement) {
+        if (!hasModifierKey(event)) {
           const horizontalArrows = event.keyCode === LEFT_ARROW || event.keyCode === RIGHT_ARROW;
           // For a horizontal menu if the left/right keys were clicked, or a vertical menu if the
           // up/down keys were clicked: if the current menu is open, close it then focus and open the