171571 - font css rule randomly dissing 1px horizontal borders

Status: RESOLVED DUPLICATE of bug 176237

(Core Graveyard :: GFX, defect, P3)

Description

[David Anderson]

screen shot: http://tippetevling.net/ala/realworld.png

reduced test case: http://mason.gmu.edu/~danders2/missingBordersALAReduced.html

see it working (font css removed):
http://mason.gmu.edu/~danders2/missingBordersNotMissingWithoutFontCss.html

related case: http://mason.gmu.edu/~danders2/ngcpMissingBorder.html
(look near Guidance tab, 2nd box on right)

Selective borders are missing when a font rule is specified.

On the A List Apart example, the font .../1.5... (in body rule) is the culprit
On the related case, simply deleting the 
font-size: 10px;
from the body rules will allow the border to be shown.

This bug either only applies to Windows 
('cuz at least the ALA page looks fine on GNU/Linux) 
or it has something to do with a particular group of fonts
('cuz I'm just starting to use GNU/Linux and have about 2 fonts to choose from)

Comment 1

[David Anderson]

Probably a windows only bug

Comment 2

[Niklas Dougherty]

Nope. I've had this problem before on Mac OS X, and my solution was to set the
border to 2px. It is a roundoff error where totals and averages and whatever in
some circumstances will make thin lines vanish or become 1px thinner.

Comment 3

[Andrew Schultz]

confirmed with linux trunk build 20020928 with
http://mason.gmu.edu/~danders2/missingBordersALAReduced.html
after putting another window over it and then removing the window, Mozilla will
sometimes draw it properly.

==> GFX Compositor

Comment 4

[Asif Masroor]

My friends website uses css and I have noticed an oddity.

The site is http://www.toomuchsexy.org/ (it is not porn, it's a blog) and on the
right side I have this set as part of the css code:
> .sidetitle {
> font-family:verdana, arial, sans-serif;
> color:#CCCCCC;
> font-size:9px;
> font-weight:bold;
> background:#333333;
> line-height:140%;
> padding:2px;
> margin-top:10px;
> border-bottom:1px solid #666666;
> text-transform:uppercase;
> letter-spacing: .2em;
> }

The weird thing is, border-bottom:1px solid #666666; does not always work. As
you can see:
Archives is underlined, Categories isn't. Recent Entries is underlined, the Poll
isn't.

Just to confirm the last three reports.

Comment 5

[Asif Masroor]

Attachment: Real live screen shot showing the bug in moz builf 2002101612

This is the Mac OS X screenshot for ToomuchSexy.

Comment 6

[David Anderson]

Changing summary from 
font css rule randomly dissing 1px horizontal (top?) borders
to
font css rule randomly dissing 1px horizontal borders
'cuz on the alistapart examples, they are bottom borders.

Comment 7

[Steve Gardner]

Attachment: Simple test case HTML

The bottom border of Box 2 is consistently missing
on Build ID 2002110408 on Windows 2000.

This test case is minimal in that the missing border reappears when any of the
other CSS lines are removed.

Comment 8

[Steve Gardner]

Attachment: Simple test case - screenshot

Shows faulty rendering of previous attachment in build 2002110408.

To clarify, it is the bottom border of the second <div class="test1"> that is
missing.

Comment 9

[David Baron :dbaron:]

Marking duplicate of later bug that more of the relevant people know about.

*** This bug has been marked as a duplicate of 176237 ***

Comment 10

[David Anderson]

since 
http://www.alistapart.com/stories/taminglists/
has been redesigned...
changing url to
http://mason.gmu.edu/~danders2/missingBordersALAReduced.html

which is still not right under firebox .8