When you enter full-screen mode on a video the scrubber disappears from the video controls. Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0a1) Gecko/20111108 Firefox/10.0a1 This bug is on trunk and on Aurora for the Firefox 10 release. We should fix it on Aurora. See attached testcase for STR.

Hmm, this seems to only happen with my main profile, and not with a clean profile. We had a similar problem in bug 689106, except that bug only occurred when the JetPack extension was installed, whereas this happens even with all extensions and addons disabled.

This bug was likely introduced by 462117, which was landed in Fx9. In the short term, we may be able to back that patch out from Aurora since it shouldn't affect Fx9. In the long term, we need to find out why the calculations for width of the player come back as something small (probably 0) during the move from non-fullscreen to fullscreen.

This regressed for me between: GOOD 2011-11-01-03-11-08 BAD 2011-11-02-03-10-56 Regression range is: http://hg.mozilla.org/mozilla-central/pushloghtml?startdate=2011-11-01+03%3A11%3A08&enddate=2011-11-02+03%3A10%3A56 So I'm guessing the culprit is: Paul ADENOT — Bug 675899 - HTML5 video player should show controls when video ends (if controls attribute is present). r=dolske http://hg.mozilla.org/mozilla-central/rev/0c3d5e7ce23c I will try backing that out locally. There's a few full-screen changesets in that range, I'll try them next.

This is a regression from: b72b2c0f996f Chris Pearce — Bug 685779 - Add -moz-full-screen-ancestor pseudo class. r=bz :( Strange that it causes the scrubber to hide on dirty profiles though. Truly weird.

I think this was either bug 708431 or bug 701662. WFM now.