660110 - border-collapse causes background color to be drawn under only half width of the border

Status: VERIFIED INVALID

(Core :: Layout: Tables, defect)

Description

[Lukas Stabe]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; rv:5.0a2) Gecko/20110524 Firefox/5.0a2
Build Identifier: Mozilla/5.0 (Windows NT 6.1; rv:5.0a2) Gecko/20110524 Firefox/5.0a2

As one can clearly see on the test page i set up, border-collapse set to collapse causes a tables background to be drawn only under half the border.
this may not affect the outcome of most designs but for one i just trief to do it pretty much kills the look ^^"

(btw: a css-property for how far the background should be drawn unter the border would be neat!)

Reproducible: Always

Steps to Reproduce:
1.open test-page

Actual Results:  
background color was drawn only under half border

Expected Results:  
should have been drawn under complete border

Comment 1

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

This is the correct behavior according to:
http://www.w3.org/TR/CSS21/tables.html#collapsing-borders
http://www.w3.org/TR/CSS21/tables.html#table-layout

Comment 2

[Lukas Stabe]

ok, then webkit is doing this wrong ^^ they also have a bug rendering semitransparent borders ^^"
anyway unexpected correct behavior, i think filling the complete border weould make more sense

anyway, if i request this "controlling how far background is drawn under border"-property, may i have any chance of seeing a -moz-border-filling or similar in say firefox 5? xD

Comment 3

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

No.

Comment 4

[Boris Zbarsky [:bzbarsky]]

For one thing, feature freeze for Firefox 5 was a month and a half ago.

Verified invalid.

Comment 5

[Lukas Stabe]

Verrrrry friendly folks around here i must say, very friendly indeed...

I was at last only one of those guys who saw something they thought to be wrong and wanted to help make it better, but who needs those anyway...

Comment 6

[Boris Zbarsky [:bzbarsky]]

I filed https://bugs.webkit.org/show_bug.cgi?id=61598 and reported this to Opera as well.

IE9 gets this wrong too, along with incorrect border drawing, but reporting a bug to them is rocket science.

Comment 7

[Boris Zbarsky [:bzbarsky]]

Lukas, I'm not sure what unfriendliness you're seeing... you asked a question, David answered it.

Comment 8

[Boris Zbarsky [:bzbarsky]]

That said, there's the explicit

  CSS 2.1 does not define where the edge of a background on a table element lies. 

weasel-wording in the spec....