Comment 4 for bug 1082101

Confirming too. This seems to be another pointer grab issue. Onboard is able to send Alt + Tab-press, the switcher launches and cuts off Onboard from further pointer events. The switcher waits for the release of the tab key, but this never happens. The device isn't completely frozen, as I can close the alt-tab switcher with synergy.

One way out I see is to allow tapping of the switcher's icons. This can already be done with static application switcher from the compiz plugins package, but not with unity's built-in one.

Until there is a better fix, we could perhaps blacklist this key combination in Onboard. What do you think, Sean?