I use Teamviewer on Ubuntu (Not sure if the problem is the same on Windows).

Whenever I use Alt+TAB to change the focussed window on my computer to another window while the remote window has focus the remote window catches the Alt keydown event but not the Alt release event! So when I get back to the remote Teamviewer window the remote computer still has the Alt Key stuck pressed.

How can I prevent that the Alt-key gets stuck on the remote computer?