src/java.desktop/macosx/classes/sun/lwawt/macosx/CPlatformWindow.java

*** 856,866 ****
          return ref.get();
      }
  
      @Override
      public void updateFocusableWindowState() {
!         final boolean isFocusable = isNativelyFocusableWindow();
          setStyleBits(SHOULD_BECOME_KEY | SHOULD_BECOME_MAIN | RESIZABLE, isFocusable); // set bits at once
      }
  
      @Override
      public void setAlwaysOnTop(boolean isAlwaysOnTop) {
--- 856,866 ----
          return ref.get();
      }
  
      @Override
      public void updateFocusableWindowState() {
!         final boolean isFocusable = isNativelyFocusableWindow() || (getOwnerFrameOrDialog(target) instanceof CEmbeddedFrame);
          setStyleBits(SHOULD_BECOME_KEY | SHOULD_BECOME_MAIN | RESIZABLE, isFocusable); // set bits at once
      }
  
      @Override
      public void setAlwaysOnTop(boolean isAlwaysOnTop) {
*** 1274,1283 ****
--- 1274,1291 ----
          } else if (target.getType() == Window.Type.POPUP) {
              execute(ptr->CWrapper.NSWindow.setLevel(ptr, CWrapper.NSWindow.NSPopUpMenuWindowLevel));
          }
      }
  
+     private Window getOwnerFrameOrDialog(Window window) {
+         Window owner = window.getOwner();
+         while(owner != null && !(owner instanceof Frame || owner instanceof Dialog)) {
+             owner = owner.getOwner();
+         }
+         return owner;
+     }
+ 
      // ----------------------------------------------------------------------
      //                          NATIVE CALLBACKS
      // ----------------------------------------------------------------------
  
      private void windowWillMiniaturize() {