twitter/twui — Issue #87: Various rendering issues while using fast user switching on OSX 10.7 Lion
Author: raytrodd
Created: 2011-12-07 19:08:47+00:00
State: open

I am seeing several issues related to fast user switching and twui.

I have a mac book pro running lion. I am logged in as 'User A', I create 'User B' and ensure that 'fast user switching' is enabled. I am using the Example.app included in the source code in all scenarios.

App becomes unresponsive after switching to User B and then back to User A:
1.) As User A, launch Example.app, notice that everything is working fine (scrolling, clicks, etc)
2.) Fast user switch to User B
3.) Fast user switch back to User A
Expected:
Example.app continues to operate normally
Actual:
The app appears to no longer respond to clicks or scrolls. I believe that events are still being handled, its just that nothing is being rendered.

App goes "blank" after being restarted while "switched out":
1.) Login as User A
1.) Move Example.app to ~/Applications
2.) execute this command from the command line

sleep 10 ; ~/Applications/Example.app

3.) quickly switch to User B (before the 10 seconds elapses)
4.) as User B, wait for more than 10 seconds to allow the app to launch while switched out
5.) switch back to User B
Expected:
Example.app is running normall
Actual:
Example.app is running, but the screen is blank. Nothing is rendered, although events seem to be processed