184709 - rendering errors in <div> sizing/positioning probably due to rounding errors

Status: RESOLVED DUPLICATE of bug 176237

(Core :: Layout: Block and Inline, defect)

Description

[Alex Krauss]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2) Gecko/20021204 Debian/1.2.1-1
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2) Gecko/20021204 Debian/1.2.1-1

See the attachment for a minimal example. The border-bottom lines defined in the
stylesheet are only rendered under some, but not all of the <div>s. Changing the
font-size (either in the browser settings or in the stylesheet) or the padding
value, the problem appears on some other div-Elements. In some cases the borders
are shown correctly, but there is 1px additional space between the elements. 

When the "padding" is specified in "px", not "em" the problem disappears
completely, so I think the reason might be a rounding error in the conversion
em->px. Is the rounding consistent in different layout modules?



Reproducible: Always

Steps to Reproduce:
view attached example

Comment 1

[Alex Krauss]

Attachment: Minimal testcase

Comment 2

[Alex Krauss]

Attachment: minimal testcase 2

this is the actual testcase...
I first uploaded the wrong file...

Comment 3

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

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