Fullscreen on OSX not correctly displaying Dock

[noisymime]

When using fullscreen mode on an OSX host, Virtualbox does not correctly hide the system Dock under certain circumstances.

Steps to reproduce: Run a Windows VM guest in fullscreen mode (Tested in OSX 10.7 and 10.8) Open another app that uses OSX native fullscreen and put it into fullscreen mode From the other fullscreen app, use the Dock to change focus back to the running VM.

The Dock will stay visible and magnified rather than disappearing.

The same problem can also be reproduced by starting, and not completing, a 3 finger swipe left or right from within the VM.

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.