594410 - distorted flash content when scrolling with D2D enabled

Status: RESOLVED DUPLICATE of bug 593839

(Firefox :: General, defect)

Description

[Rumos Mok]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; rv:2.0b6pre) Gecko/20100908 Firefox/4.0b6pre
Build Identifier: Mozilla/5.0 (Windows NT 6.1; rv:2.0b6pre) Gecko/20100908 Firefox/4.0b6pre

Problem arises when viewing flash contents with D2D enabled
Upon scrolling (up/down), some parts of the flash content appears to be distorted.

Reproducible: Always

Steps to Reproduce:
1. Visit www.youtube.com
2. Pick any video you like
3. When the video is playing, try scrolling the webpage up/down
Actual Results:  
You should notice that the player control is distorted.
Though it appears to be functioning well, so you can play/pause, fast forward, rewind, etc.
But you have to guess the location of the controls

Expected Results:  
Simple.
No distorted flash content.

NOT every flash is affected.
I only observed the flash from Youtube.com and Google Analytics is affected.

Comment 1

[juan becerra [:juanb]]

Attachment: video controls and scrolling

Comment 2

[juan becerra [:juanb]]

Mozilla/5.0 (Windows NT 6.1; rv:2.0b6pre) Gecko/20100913 Firefox/4.0b6pre

You can scroll up and down the page, and you'll the video controls not repaint correctly, as seen in the attachment. Re-scrolling will usually make the problem go away.

Comment 4

[juan becerra [:juanb]]

Although bug 593839 calls out d3d explicitly, I think these two are related. In that bug just loading will show the problem. Here you have to scroll up and down.