920044 - Broken highlight on some elements on Mac OS X

Status: RESOLVED DUPLICATE of bug 913407

(Core :: Web Painting, defect)

Description

[Simona Badau, Desktop QA, PTO 13-25aug]

Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:25.0) Gecko/20100101 Firefox/25.0
Build ID: 20130923194050

Steps to reproduce:

Scenario 1:
1. Start Firefox with a new profile.
2. Open the Add-ons Manager and set the focus on the Plug-ins section.
3. Quit Firefox.
4. Launch Firefox again and open the Add-ons Manager.
5. Observe the Plug-ins.

Scenario 2:
1. Start Firefox with a new profile.
2. Navigate to https://addons.mozilla.org/en-US/firefox/themes/?sort=popular
3. Click on one of the Themes.
4. Observe the "Add to Firefox" button.

Expected results:
Everything is properly displayed.

Actual results:
Scenario 1: The plugins are highlighted.
Scenario 2: The "Add to Firefox" button is highlighted.
Please see the screencast for more details: http://screencast.com/t/5gERjaCLPEdh

Notes:
Reproducible on Mac OS X only (reproduced on Mac OS X 10.6 and on Mac OS X 10.8).
Not reproducible on Firefox 24 RC.
Reproducible on Firefox 25 beta 2, on the latest Aurora 26.0a2 and on the latest Nightly 27.0a1.

I'll look for a regression range as soon as possible.

Comment 1

[Simona Badau, Desktop QA, PTO 13-25aug]

Last good nightly: 2013-07-22
First bad nightly: 2013-07-23

Pushlog:
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=2268ff80683a&tochange=5ceea82a79c7

Comment 2

[u279076]

Nothing stands out to me in this regression range. Could you please come up with a minimized testcase?

Comment 3

[Timothy Nikkel (:tnikkel)]

Reducing the number of changesets (through local builds I guess) might be helpful to narrow it down too.

Comment 4

[u279076]

Seems like bug 913407 (another OSX rendering bug) has the same regression range.

Comment 5

[Simona Badau, Desktop QA, PTO 13-25aug]

(In reply to Anthony Hughes, Mozilla QA (:ashughes) from comment #2)
> Nothing stands out to me in this regression range. Could you please come up
> with a minimized testcase?

When saving the page (https://addons.mozilla.org/en-US/firefox/addon/red-ladybug/) locally, I can't reproduce the issue (even without changing anything).

(In reply to Anthony Hughes, Mozilla QA (:ashughes) from comment #4)
> Seems like bug 913407 (another OSX rendering bug) has the same regression
> range.

I went through Bug 913407, and this one seems to be a duplicate.

Comment 6

[u279076]

Thanks Simona.