diff -r 011594a05a1a src/macosx/classes/sun/lwawt/macosx/CPlatformLWWindow.java
--- a/src/macosx/classes/sun/lwawt/macosx/CPlatformLWWindow.java
+++ b/src/macosx/classes/sun/lwawt/macosx/CPlatformLWWindow.java
@@ -209,7 +209,7 @@
         LWLightweightFramePeer peer = (LWLightweightFramePeer)getPeer();
         int scale = ((LightweightFrame)peer.getTarget()).getScaleFactor();
 
-        Rectangle bounds = ((LightweightFrame)peer.getTarget()).getBounds();
+        Rectangle bounds = ((LightweightFrame)peer.getTarget()).getHostBounds();
         for (GraphicsDevice d : ge.getScreenDevices()) {
             if (d.getDefaultConfiguration().getBounds().intersects(bounds) &&
                 ((CGraphicsDevice)d).getScaleFactor() == scale)
diff -r 011594a05a1a src/share/classes/sun/awt/LightweightFrame.java
--- a/src/share/classes/sun/awt/LightweightFrame.java
+++ b/src/share/classes/sun/awt/LightweightFrame.java
@@ -31,6 +31,7 @@
 import java.awt.Image;
 import java.awt.MenuBar;
 import java.awt.MenuComponent;
+import java.awt.Rectangle;
 import java.awt.Toolkit;
 import java.awt.peer.FramePeer;
 
@@ -140,4 +141,31 @@
      * @param scale the factor
      */
     public abstract void setScaleFactor(int scale);
+
+    /** Host window absolute bounds. */
+    private int hostX, hostY, hostW, hostH;
+
+    /**
+     * Returns the absolute bounds of the host (embedding) window.
+     * 
+     * @return the host window bounds
+     */
+    public Rectangle getHostBounds() {
+        if (hostX == 0 && hostY == 0 && hostW == 0 && hostH == 0) {
+            // The client app is probably unaware of the setHostBounds.
+            // A safe fall-back:
+            return getBounds();
+        }
+        return new Rectangle(hostX, hostY, hostW, hostH);
+    }
+
+    /**
+     * Sets the absolute bounds of the host (embedding) window.
+     */
+    public void setHostBounds(int x, int y, int w, int h) {
+        hostX = x;
+        hostY = y;
+        hostW = w;
+        hostH = h;
+    }
 }