diff --git a/app/src/common/shared/org/mozilla/vrbrowser/ui/widgets/NavigationBarWidget.java b/app/src/common/shared/org/mozilla/vrbrowser/ui/widgets/NavigationBarWidget.java
index e43f6a2ff..88d6d3da9 100644
--- a/app/src/common/shared/org/mozilla/vrbrowser/ui/widgets/NavigationBarWidget.java
+++ b/app/src/common/shared/org/mozilla/vrbrowser/ui/widgets/NavigationBarWidget.java
@@ -113,6 +113,7 @@ public interface NavigationListener {
     private Executor mUIThreadExecutor;
     private ArrayList<NavigationListener> mNavigationListeners;
     private TrackingProtectionStore mTrackingDelegate;
+    private boolean mIsWindowAttached;
 
     public NavigationBarWidget(Context aContext) {
         super(aContext);
@@ -138,6 +139,8 @@ private void initialize(@NonNull Context aContext) {
 
         updateUI();
 
+        mIsWindowAttached = false;
+
         mAppContext = aContext.getApplicationContext();
 
         mUIThreadExecutor = ((VRBrowserApplication)aContext.getApplicationContext()).getExecutors().mainThread();
@@ -489,6 +492,8 @@ public void detachFromWindow() {
             mViewModel.getUrl().removeObserver(mUrlObserver);
             mViewModel = null;
         }
+
+        mIsWindowAttached = false;
     }
 
     @Override
@@ -524,6 +529,8 @@ public void attachToWindow(@NonNull WindowWidget aWindow) {
             setUpSession(getSession());
         }
         handleWindowResize();
+
+        mIsWindowAttached = true;
     }
 
     private Session getSession() {
@@ -798,6 +805,10 @@ private void closeFloatingMenus() {
     // Content delegate
 
     private Observer<ObservableBoolean> mIsFullscreenObserver = isFullScreen -> {
+        if (!mIsWindowAttached) {
+            return;
+        }
+
         if (isFullScreen.get()) {
             enterFullScreenMode();