Tor Browser bundle restores focus to window when tor restarts

On Mac OS X 10.8.x (but I have also seen it in previous versions of it), when Tor reconnects the window and space containing the Tor browser bundle will have focus to it restored.

Steps to reproduce:

• Start TBB
• Disconnect from the network
• Go to a space different than the one where TBB is in
• Wait for Tor to automatically reconnect
• Focus is restored to the TBB space

I believe this is quite a serious anonymity leak because if you restore your laptop from sleep and are showing something to somebody it will unexpectedly switch to your torbrowser all of a sudden.