321310 - Varying bottom-border size of an <li> element in <ul> when using ems for size

Status: RESOLVED DUPLICATE of bug 287624

(Core :: CSS Parsing and Computation, defect)

Description

[Simon Hirscher]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.8) Gecko/20051111 Firefox/1.5
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.8) Gecko/20051111 Firefox/1.5

I created a website design with a navigation similar to the example page and tested it under Firefox 1.0.7 - everything was ok.
After having updated Fx to 1.5 i saw some bottom borders of li elements which were thicker than the rest. I think, there's a rhythm of thick and thin lines, which depends on the set (grand-)parent's font size and of course the border size of the li element.

Reproducible: Always

Steps to Reproduce:
1. Create a <ul>-list as usual.
2. CSS: Set the font size of <body>, <ul> and the border size (i recommend using border top or bottom) of the li elements in em
[3. Sometimes there isn't anything to see. Then "play" with the font and border sizes until you see it]

Actual Results:  
There's a list with list elements which have different border sizes.

Expected Results:  
All borders should be equal regarding the thickness.

Comment 1

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

*** This bug has been marked as a duplicate of 287624 ***

Comment 2

[Adam Guthrie]

Attachment: testcase