279175 - GIF renders incorrectly when display set to 'thousands' of colors mode

Status: RESOLVED DUPLICATE of bug 239701

(SeaMonkey :: General, defect)

Description

[6v84lua02]

User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

The graphic appears to break along interlaced lines. This happens with many, but
not all, GIF images when the display is set to 'thousands.' The images appear
fine in all other applications (including Safari), and appear fine in
Mozilla/Firefox if the display is set to 'millions' of colors. Saving the image
to disk and examining it shows it to be normal in any other program.

I reproduced this on multiple OS/X systems running 10.3.(6 and 7) with nightly
builds and clean profiles, even after deleting and reinstalling the applications
completely and repairing file permissions.

Reproducible: Always

Steps to Reproduce:
1. Set the display color depth to 'thousands'
2. Load the affected page/graphic. Note the weird shifting of interlacing lines.
3. Set the display color depth to 'millions'
4. Observe how the image now appears normal, even on a page already loaded

Actual Results:  
GIF Images display distorted.

Expected Results:  
GIF images should display correctly.

Comment 1

[Hiro]

duplicate bug239701 ?

Comment 2

[6v84lua02]

*** This bug has been marked as a duplicate of 239701 ***