Visit http://www.slate.com/blogs/moneybox/2013/11/25/robyn_meets_robyn_inspired_robot.html Scroll down, so that the flash embedded video reaches the top of the screen. Note that it appears _above_ the in-page title bar. Screenshot here: http://imgur.com/d6qbS9b Chrome appears to behave correctly here.
A note: removing the backface-visibility + transform makes it sort of work (the text becomes visible on a white background over the video). If you then remove the "background: white" it's the same as the original result - the text is under the video.
Depends on: 471526
Keywords: reproducible, testcase
Priority: -- → P5
(Note: For the testcase to load the flash content, you have to either set the pref "security.mixed_content.block_active_content" to false, or use the "shield" UI that loads in the URL bar. ) Also: the testcase renders superimposed in both Firefox 25 and Trunk, whereas the URL from comment 0 renders correctly in Firefox 25 (no superimposing) but broken in trunk. So I think there is something that regressed here, which isn't exposed by the current testcase.
Sorry, disregard comment 3; I can reproduce in Firefox 25 as well now. Not sure why I didn't see it there before. So, not (necessarily) a regression after all.
Keywords: regression, regressionwindow-wanted
Confirmed on 28.0a1 (2013-12-09), Win 7 x64.
Status: UNCONFIRMED → NEW
Ever confirmed: true
OS: Linux → All
Created attachment 8444070 [details] comparison with other UAs FWIW, I see the same behavior for attachment 8337961 [details] in Chrome (NPAPI + PPAPI) and MSIE (ActiveX).
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