582533 - Title bar is not always drawn properly

Status: RESOLVED DUPLICATE of bug 579250

(Firefox :: Shell Integration, defect)

Description

[Felipe Alfaro Solana]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-US) AppleWebKit/534.4 (KHTML, like Gecko) Chrome/6.0.478.0 Safari/534.4
Build Identifier: 4.0b2

When switching from 4.0b1 to 4.0b2 I noticed that Firefox's title bar is usually drawn incorrectly, using a darker shade of gray and a think black line splitting the title bar from the toolbar. I tried changing the placement of the tabs (on top, or below the toolbar), but this weird rendering behavior still occurs from time to time.

Reproducible: Sometimes

Steps to Reproduce:
Honestly, I'm not sure how to reproduce the problem as it seems to happen more or less randomly, sometimes when switching tabs, sometimes when switching windows.
Actual Results:  
As in seen in the attached screen shots, sometimes a think black line is drawn between the title bar and the toolbars. In addition, it seems the shade of gray used in the title bar is different, which leads me to think there is a bug in the title bar rendering that sometimes uses the Cocoa title bar, sometimes something else.

Expected Results:  
I expect the title bar to not have the black line drawn between the title bar and the toolbar, as shown in the "Right.png" screen shot.

This also happened with the nightly builds between 4.0b1 and 4.0b2, and it was one of the reasons why I switched back to 4.0b1.

Comment 1

[Felipe Alfaro Solana]

Attachment: This screen shot shows how the title bar in Firefox is sometimes drawn incorrectly

Comment 2

[Felipe Alfaro Solana]

Attachment: This screen shot shows how the title bar in Firefox looks when it is drawn properly

Comment 3

[Stefan [:stefanh]]

This should be fixed in recent nightly builds.