Why there are two lists stacked onto each other when I'm using ALT + TAB?
This problem was on Ubuntu 16.04 and still persists after upgrade to 18.04?
Sorry for poor quality, had to take the photo with phone as you can't make a screenshot while ALT key is pressed.
If you're using Gnome Shell, check under extensions which ones you enabled
– Andrea Olivato Nov 16 '18 at 02:24Alt+TabWindow switcher. – WinEunuuchs2Unix Nov 16 '18 at 02:28Unable to locate GNOME Shell settings or version. Make sure it is installed and running.Where can I see list of the enabled extensions? – gdrt Nov 16 '18 at 02:56