639649 - flash video problems

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[Ulterior]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.15) Gecko/20110303 Firefox/3.6.15 ( .NET CLR 3.5.30729; .NET4.0E)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.15) Gecko/20110303 Firefox/3.6.15 ( .NET CLR 3.5.30729; .NET4.0E)

video from youtube is clipped out of the window and presented at top left screen position when navigating through tabs in firefox

Reproducible: Sometimes

Steps to Reproduce:
1.open a video at http://www.youtube.com/watch?v=X9wqR1XhQ3o
2.open a few pages in other tabs
3.navigate through tabs
Actual Results:  
graphical quirks

Expected Results:  
video embedded in the appropriate window, not outside the firefox

Comment 1

[Ulterior]

I suspect that flash video fails to acquire correct window handle and is getting drawn on a NULL window which is desktop

Comment 2

[Ulterior]

The video must be playing to be able to reproduce the bug

Comment 3

[Ed Morley [:emorley]]

Works fine for me using Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b13pre) Gecko/20110303 Firefox/4.0b13pre ID:20110303122446

Could you see if the issue occurs if using Firefox in safe mode:
http://support.mozilla.com/kb/Safe+Mode

How about with a new, empty testing profile? (Don't install any addons into it)
http://support.mozilla.com/kb/Basic+Troubleshooting#w_make-a-new-profile