Index: /trunk/src/VBox/Frontends/VirtualBox/src/runtime/fullscreen/UIMachineWindowFullscreen.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/runtime/fullscreen/UIMachineWindowFullscreen.cpp	(revision 61966)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/runtime/fullscreen/UIMachineWindowFullscreen.cpp	(revision 61967)
@@ -487,4 +487,7 @@
         placeOnScreen();
 
+        /* Restore full-screen state after placeOnScreen() call: */
+        setWindowState(Qt::WindowFullScreen);
+
         /* Restore minimized state if necessary: */
         if (m_fWasMinimized)