965408 - Can't select dropdown combobox item (r+ in bugzilla) with OMTA enabled

Status: RESOLVED DUPLICATE of bug 875209

(Core :: Widget: Cocoa, defect)

Description

[Benoit Girard (:BenWa)]

Attachment: dropdownbug.gif

See screencast. It seems to reproduce all the time right now. I'm on 29.0a1 (2014-01-28) + 10.9.

Comment 1

[Stephen A Pohl [:spohl]]

Hmm, I tried to find a regression range, but it turns out I'm unable to reproduce the issue. I'm on 10.9.1. Anything specific about your setup, profile or preferences that could be the trigger?

Comment 2

[Benoit Girard (:BenWa)]

I'm starting to think my main profile is just messed up. I ran a regression window with my main profile and that's perhaps what has caused my firefox to become very buggy on OSX.

This doesn't reproduce on a clean profile. I'll take a look and see if I can see what in my profiles is causing it.

Comment 3

[M. Kristall]

I can also reproduce this without a clean profile on x86 Linux. I poked around in my prefs.js and what I found is that this happens with layers.offmainthreadcomposition.async-animations = true. If I flip it or disable omtc entirely, <select> works as expected.

Comment 4

[Benoit Girard (:BenWa)]

Thanks!