Created attachment 603212 [details] Screenshot of the issue User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0) Gecko/20120305 Firefox/13.0a1 Build ID: 20120305031045 Steps to reproduce: It is originally posted at http://forums.mozillazine.org/viewtopic.php?f=23&t=2439215. Test link: http://forum.moztw.org/posting.php?mode=reply&f=2&t=34752 It is a local firefox community forum in Chinese using phpBB. At the bottom there is a preview pane of previous replies. If I scroll up and down inside the preview pane, sometimes the pictures in it are rendered outside the pane overlapping other contents. It returns to normal position after a second or so. Last good nightly: 2012-02-16 First bad nightly: 2012-02-17 Pushlog: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=a853f4017192&tochange=2271cb92cc05 The issue is not reproducible if hardware acceleration is disabled.
Timothy, any idea what could be the problem here?
I can see it on Mac too. Based on that I'm suspecting bug 727661.
Confirmed that bug 727661 is the cause.
Might be fixed by bug 735141.
[Triage Comment] Adding qawanted to confirm that bug 735141 possibly fixed - STR in comment 0
(In reply to Lukas Blakk [:lsblakk] from comment #5) > [Triage Comment] > Adding qawanted to confirm that bug 735141 possibly fixed - STR in comment 0 Apparently this landed in Aurora on March 21st. I tested Firefox 13.0a2 Aurora 2012-03-20 and cannot reproduce this bug. Therefore, I cannot claim bug 735141 fixed this bug. Seems as though it could have been fixed beforehand.
Let's call this fixed. If not please reopen.