Comment 8 for bug 153322

Not that the "break Alt-tab" means: Windows A & B on viewport 1, Move window B to viewport 2 and _back_ to viewport 1, and Alt-Tab loses that window. Also the Alt-Shift-Tab (or the windows switcher that shows up like a list), lets you see all the windows in the list, but when you switch to Window B in the list, it doesn't actually switch, it just returns to Window A repeatedly. errr...