1090851 - Part of the screen blacks out after maximizing the window even if the hardware acceleration is disabled

Status: RESOLVED DUPLICATE of bug 1086985

(Firefox :: Untriaged, defect)

Description

[Bingqing Li]

Attachment: blacks-out.jpg

Environment:
-----------------------------
Firefox 34 beta
Win 7 x86_64 & Ubuntu 12.04 x86_64 & Mac OS X 10.7.5


Steps to reproduce:
-----------------------------
1. Goto "Options -> General -> Startup -> When Firefox starts: ", choose "Show a blank page"

2. Restart Firefox

3. Restore down the window of Firefox if Firefox starts up with a maximized window.
   If not, maximize the window first, then restore down.

4. Maximize the window of Firefox


Actual result:
-------------------------------------------------
1. Parts of the screen blacks out

2. Goto "Options -> Advanced -> General", 
   uncheck "use hardware acceleration when available", 
   then repeat step 2 ~ 4, 
   --> parts of the screen blacks out.

Pls see the attachment.


Additional info:
-------------------------------------------------
1. Open a new tab, and then go back to the blank page, it returns to normal.