src/java.desktop/unix/classes/sun/awt/X11/XWM.java

@@ -1027,12 +1027,18 @@
         if (insLog.isLoggable(PlatformLogger.Level.FINE)) {
             insLog.fine("Setting shell resizable " + window);
         }
         XToolkit.awtLock();
         try {
-            Rectangle shellBounds = window.getShellBounds();
-            shellBounds.translate(-window.currentInsets.left, -window.currentInsets.top);
+            Rectangle shellBounds;
+            if (getWMID() != UNITY_COMPIZ_WM) {
+                shellBounds = window.getShellBounds();
+                shellBounds.translate(-window.currentInsets.left,
+                                      -window.currentInsets.top);
+            } else {
+                shellBounds = window.getDimensions().getScreenBounds();
+            }
             window.updateSizeHints(window.getDimensions());
             requestWMExtents(window.getWindow());
             XlibWrapper.XMoveResizeWindow(XToolkit.getDisplay(),
                                           window.getShell(),
                                           window.scaleUp(shellBounds.x),