46357 - TABLE with solid collapsing border, weird rendering

Status: VERIFIED FIXED

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

Description

[aaron]

I have encountered a problem rendering a table in Mozilla M16 running under 
Windows NT 4, which is also reproducible in M17/2000071620.

The problem occurs when rendering a TABLE with "border-collapse : collapse", and 
in which some cells have "border : solid".  The horizontal lines within the 
table break up when the window is resized horizontally, even though there is no 
reflow.  It also appears that the collapsing borders do not actually collapse 
correctly, especially at the right-hand border of the table.

There seems to be many problems with collapsing borders, so this bug may end up 
being a duplicate.  Nonetheless, I will upload a testcase for what I'm seeing.

Comment 1

[aaron]

Attachment: A sample HTML table with strange borders

Comment 2

[aaron]

Attachment: Various non-table styles for the testcase

Comment 3

[aaron]

Attachment: A placeholder icon (to avoid incorrect spacing via ALT tags)

Comment 4

[Stephen Walker]

[e-mail] what are the last 2 attachments are used for? if they're 
needed for the bug could you please add them to the html file & post the html 
file to a server if you can

Comment 5

[aaron]

There seems to be some confusion over what the attachments actually do, so allow 
me to elaborate.

I noticed the borders-breaking-up problem in one of my own intranet pages, which 
I have cut down a bit for use as the test case:

 - The first attachment is a HTML page, which demonstrates the table's look and
   structure, and includes the table-related styles

 - The second attachment contains some of my own styles.  Strictly speaking,
   yes, they could have been included with the HTML file (the first attachment),
   but I elected to include a separate stylesheet so that the problematic styles
   (in the HTML document) would be separate.  I have never had any problems with
   these styles.

 - The third attachment is a GIF image, used as a placeholder.  The real page
   uses images of equal dimensions everywhere, so the test case above is very
   close to what my real page looks like.

From that, I guess you need all three files to reproduce the test case (except 
perhaps by combining the external stylesheet into the HTML file, as mentioned). 
As long as they're in the same folder, opening the HTML file should be enough to 
reproduce the problem.

HTH,
Aaron

Comment 6

[Mats Palmgren (inactive)]

Attachment: Self-contained testcase

Comment 7

[Mats Palmgren (inactive)]

Aaron, does my testcase show this bug correctly?
If so, this is probably a duplicate of bug 27529.

Comment 8

[aaron]

Mats,

I reckon your testcase is pretty close to mine, and the weird spacing in yours 
is likely caused by the same problem that pushes the borders out of whack in my 
testcase.  The right-hand borders of the two tables, neither of which lines up 
correctly, are a bit of a giveaway.

If there are no objections, this bug should be marked as a duplicate.  The 
discussion for #27529 covers pretty much everything else I can think of 
mentioning.

Comment 9

[Rann Bar-On]

I agree with the above discussion, marking duplicate of 27529.

*** This bug has been marked as a duplicate of 27529 ***

Comment 10

[Matt Perry]

Verified duplicate.

Comment 11

[Mats Palmgren (inactive)]

bug 27529 has been resolved FIXED, but I still the same problem in my testcase
above (titled "Self-contained testcase"). Build 2000-09-02-08 on Win98.

Comment 12

[Bernd Mielke]

I think this bug is more related to bug 41262.

Comment 13

[Christine Hoffman]

This is not a dup of #27529 which is now fixed. Problem described below still 
exists.

Comment 14

[Mats Palmgren (inactive)]

*** Bug 56404 has been marked as a duplicate of this bug. ***

Comment 15

[Jos.vandenOever]

Attachment: this file shows an example of the bug

Comment 16

[Fabian Guisset]

Shouldn't this be dependant on bug 41262?

Comment 17

[karnaze (gone)]

Moving to m1.0

Comment 18

[karnaze (gone)]

->m099

Comment 19

[Kevin McCluskey (gone)]

Marking nsbeta1+.

Comment 20

[karnaze (gone)]

Fixed by meta bug 41262.

Comment 21

[Amarendra Hanumanula]

 In the given testcase the table does not break up when the window is resized
horizontally. Verified. Build ID: 2002031303