Ubuntu
gnome-shell package

  1. Bug #1950925
  2. Comment #7

Comment 7 for bug 1950925

Revision history for this message
Andrea (mariofutire86) wrote :

I come from https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1932328

For me, they look related.
Before using Thunderbird (or before it mis-behaves), Alt-TAB works.

When Thunderbird goes wrong, Alt-TAB stops working.