18657 - color glitch on transparent gif in a table (related to bug 18170?)

Status: VERIFIED DUPLICATE of bug 16100

(Core :: Layout: Tables, defect, P3)

Description

[Ben]

This could be the same problem as bug 18170, but...
At http://slashdot.org the title to every article is in a table with a #006666
background. There is an image, slc.gif, that forms the curve on the top left
corner of each title's box. With mozilla this image keeps having 2 or 3
vertical colored lines (3 pixls high, I think) comming up from the bottom edge
of the image. sometimes they are red green and blue, sometimes green, and
sometimes they are almost #006666 as it should be, but not quite.

This happens with mozilla and viewer under linux and windows build# 1999111008
and earlier.


This is the html source that makes that part of the page:

<TABLE width="99%" cellpadding=0 cellspacing=0 border=0><TR><TD
    valign=top bgcolor="#006666"><IMG
    src="http://images.slashdot.org/slc.gif" width=13 height=16 alt=""
align=top><FONT
    size=4 color="#FFFFFF" face="arial,helvetica"><B>Why Mozilla is Alive and
Well</B></FONT></TD>
</TR></TABLE>

Comment 1

[karnaze (gone)]

Kevin, this is related to 18170.

Comment 2

[Kevin McCluskey (gone)]

Moving to M15

Comment 3

[Kevin McCluskey (gone)]

Don, it looks like another image transparency problem. I can see the problem 
consistently on WIN98 but on WINNT is usually looks fine.

Comment 4

[dcone (gone)]

Background images with transparency can not use general speedup for backgrounds.
Fixed.

Comment 5

[Ben]

This is not fixed. It's become less frequent I think but I just reproduced this 
with M14 under Windows. See http://www.rpi.edu/~frantb/mozbug.png for a 
screenshot. Note the funny colors to the left of the article titles. They 
appear to be coming from a clear part of a gif (see my original discription).

This bug is hard to reproduce. It appears to come and go randomly. The 
screenshot was taken first thing after opening Mozilla. Another time I couldn't 
reproduce it if I tried.

After taking the screenshot I reloaded the page and the funny image pattern was 
exactly the same. I then closed the browser and reopened it. I then got a 
different random pattern of colors. The pattern is always the same overall 
shape and always a series of vertical bars. The bars also appear to be in the 
same pallet (pastel-like) most of the time for what it's worth.

Comment 6

[dcone (gone)]

What is the depth you are running at.  If you are in 256 color mode.. 8 bit you 
will get the symptoms you are describing.  I will keep this closed until I 
understand exactly what depth you are using.  There is a bug for 8 bit mode 
already.  If it is not depth, then the bug must have to do with something else, 
but not tables and GIFs, but more to do with GIF's in general.

Comment 7

[dcone (gone)]

There are some problems still.. but this is a dup.. so I will re-open then 
dup it to another bug that is the same as this.

Comment 8

[dcone (gone)]

*** This bug has been marked as a duplicate of 16100 ***

Comment 9

[Sebastian Späth]

yup, looks like a dupe,
VERIFYING as such