848720 - Text and image rendering malfunction on any website

Status: RESOLVED DUPLICATE of bug 812695

(Firefox :: Untriaged, defect)

Description

[mraksign]

Attachment: Screenshots of correct and broken rendering

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0
Build ID: 20130215130331

Steps to reproduce:

It sometimes already appears when I open a new website, browse via a link or somehow else end up on another page. It does not matter whether it is in a new tab or not.
If not already present when loading the page, scrolling makes it visible. This is even increased when using the smooth scrolling option. Sometimes it seems there is an imaginary line on the screen where the text starts to "break" when being scrolled above it (this line's position varies).
In very rare cases, it even occurs in the dialogue asking what to do with a linked file (save/open with).


Actual results:

As can be seen from the attached screenshots, the text and image rendering becomes "broken". It is not blurred like with a wrong ClearType setting. This happens to text, vector and bitmap images (however with bitmaps, it is hard to see).
When the page is repainted (e.g. after selecting the text or switching windows) the rendering is correct, but it will break again when scrolling.
As mentioned above, in very rare cases this is not limited to website rendering alone but even occurs in the dialogue asking what to do with a linked file (save/open with).
I tried disabling all addons and plugins, running Firefox with a virgin profile, reinstalling Firefox, running the next Beta, a Nightly build or the previous version (18.0). None of these was the cure, although the problem first occured directly after the update to version 19.
This occurs only in Firefox, other web browsers and programs don't show this behavior, not even Mozilla Thunderbird (version 17.0.3)
I am running Firefox 19.0 on a Windows 7 laptop computer, but on other Windows 7 machines running Firefox 19, this does not occur.

Comment 1

[Ekanan Ketunuti]

It's definitely a dupe of bug 812695.

Comment 2

[mraksign]

(In reply to Ekanan Ketunuti from comment #1)
> It's definitely a dupe of bug 812695.
> 
> *** This bug has been marked as a duplicate of bug 812695 ***

I'm sorry for filing a dupe. The search I conducted did not yield any results, so I created this entry.
Thanks!