233720 - :hover background change inside display:table doesn't invalidate correct area

Status: RESOLVED FIXED

(Core :: Web Painting, defect)

Description

[Nabil]

User-Agent:       
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.6) Gecko/20040206 Firefox/0.8

Recent builds (recent nightlies of Camino, and the latest Firefox point release)
are no longer rendering the CSS class :hover correctly, when used in conjunction
with absolute positioning.  This can be seen in the navigation section of
http://www.nadreck.org (it worked in the previous point release of Firebird, it
also works in Safari, and IE6 for Windows).  Additionally, the parser seems to
be randomly cutting the page off part of the way through.  Exactly where appears
to be random: reload a few times on the main page as well as in a given article
to see what I mean.

Reproducible: Always
Steps to Reproduce:
1.  Load a page that uses nested divs and absolute positioning, with a :hover
background on a set of links to a different color.
2.  Attempt to perform a mouseover on a link
3.  Reload the page a few times.
Actual Results:  
Depending on where the link was, the background that should show up from the
:hover either doesn't show up, or only half of it shows up.  Just how much of
the content (on a static page) shows up each reload varies wildly: sometimes it
is the full page, sometimes it barely shows a sentence or two.

Expected Results:  
The background color should have changed when the mouse rolled over the link.
The page should have fully loaded, every time.

Comment 1

[Mats Palmgren (inactive)]

Attachment: Testcase for the :hover problem

Comment 2

[Mats Palmgren (inactive)]

-> Layout

Comment 3

[Mats Palmgren (inactive)]

I can't reproduce the "cutting page off randomly" problem.
Please open a separate bug report for that (with a screenshot), thanks.

Comment 4

[Boris Zbarsky [:bzbarsky]]

See bug 233756 

Comment 5

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

This seems like an invalidation problem.  I can get the whole thing to repaint
if I try...

Comment 6

[Boris Zbarsky [:bzbarsky]]

The patch in bug 233094 happens to fix this.

Comment 7

[Boris Zbarsky [:bzbarsky]]

Fixed by checkin for bug 233094.