fixed

android/app/src/main/java/com/reactnativenavigation/bridge/NavigationReactModule.java

  * BottomTabs (app) - boolean
  * TopBar (per screen)
  * - TitleBar
- * - TopTabs (segmented control / view pager)
+ * - - RightButtons
+ * - - LeftButton
+ * - TopTabs (segmented control / view pager tabs)
  * DeviceStatusBar (app) (colors are per screen)
  * AndroidNavigationBar (app) (colors are per screen)
- * SideMenu (app) - boolean
+ * SideMenu (app) - boolean, (menu icon is screen-based)
  */
 public class NavigationReactModule extends ReactContextBaseJavaModule {
     public static final String NAME = "NavigationReactModule";
 
     @ReactMethod
     public void dismissAllModals() {
-        NavigationCommandsHandler.dismissAlModals();
+        NavigationCommandsHandler.dismissAllModals();
     }
 
     @ReactMethod

android/app/src/main/java/com/reactnativenavigation/controllers/Modal.java

 import android.app.Activity;
 import android.app.Dialog;
 import android.content.DialogInterface;
-import android.util.Log;
 import android.view.Window;
 
 import com.reactnativenavigation.R;
 
     @Override
     public void onBackPressed() {
-        Log.d("LOG", "Modal.onBackPressed ");
         if (!layout.onBackPressed()) {
             super.onBackPressed();
         }

android/app/src/main/java/com/reactnativenavigation/controllers/ModalController.java

 package com.reactnativenavigation.controllers;
 
 import android.app.Activity;
-import android.util.Log;
 
 import com.reactnativenavigation.layouts.ScreenStackContainer;
 import com.reactnativenavigation.params.ScreenParams;
         }
     }
 
-    public boolean onBackPressed() {
-        Log.d("LOG", "ModalController.onBackPressed ");
-        return false;
-    }
-
     public boolean isShowing() {
         return !stack.empty();
     }

android/app/src/main/java/com/reactnativenavigation/controllers/NavigationActivity.java

 
     @Override
     public void onBackPressed() {
-        if (modalController.onBackPressed()) {
-            return;
+        if (!layout.onBackPressed()) {
+            getNavigationReactInstance().onBackPressed();
         }
-        if (layout.onBackPressed()) {
-            return;
-        }
-        getNavigationReactInstance().onBackPressed();
     }
 
     @Override

android/app/src/main/java/com/reactnativenavigation/controllers/NavigationCommandsHandler.java

         });
     }
 
-    public static void dismissAlModals() {
+    public static void dismissAllModals() {
         final NavigationActivity currentActivity = NavigationActivity.currentActivity;
         if (currentActivity == null) {
             return;

android/app/src/main/java/com/reactnativenavigation/screens/Screen.java

 import android.content.Context;
 import android.graphics.Color;
 import android.os.Build;
+import android.util.Log;
 import android.view.Window;
 import android.widget.RelativeLayout;
 
         }
     }
 
+    @Override
+    protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        Log.d("LOG", "Screen.onAttachedToWindow " + this);
+    }
+
+    @Override
+    protected void onDetachedFromWindow() {
+        super.onDetachedFromWindow();
+        Log.d("LOG", "Screen.onDetachedFromWindow " + this);
+    }
+
     @Override
     public void onScrollChanged(ScrollDirectionListener.Direction direction) {
         topBarVisibilityAnimator.onScrollChanged(direction);