Так выглядит подвисшее окно
Screenshot at 2017-04-21 11:58:00.png (image/png), 45.06 KB, created by Pavel Isopenko on 2017-04-21 12:05:02 MSK
(hide)
 
Creator: Pavel Isopenko
Created: 2017-04-21 12:05:02 MSK
Size: 45.06 KB
Actions: View
Attachments on bug 33407: 7069 | 7070