Unity

Alt+tab switcher blinks when overlapping with a "unresponsive/crashed" window

Bug #1060855 reported by Albert Astals Cid on 2012-10-03

This bug report is a duplicate of: Bug #1070735: When Unity UI elements are above an unresponsive window, they flicker. Edit Remove

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	Unity	New	Low	Unassigned

Bug Description

If you have a "unresponsive/crashed" window (those that get shadowed a bit because the program crashed) the alt+tab switcher will blink in the areas that overlap with that window (even if the window is not visible)

These are my steps for reproduction (obviously the first steps have nothing to do with this and are just a way to get a crashed window)

* download the software-center sources
  bzr branch lp:software-center
* debug submit_review_gtk3.py
  PYTHONPATH=. gdb -arg python ./data/submit_review_gtk3.py --pkgname p7zip-full --iconname "" --parent-xid "" --version 9.20.1~dfsg.1-4 --origin ubuntu --datadir ./data --appname 7zip
  run
* wait for it to crash
* Put the crashed window around where alt+tab will apprear
* Trigger the alt+tab switcher

I'm attaching a video that shows the blinking