STR: 1. Start playing a live-stream video on air.mozilla.org (I think (?) this might only happen with live streams, as opposed to pre-recorded videos) 2. Zoom in with Ctrl + ACTUAL RESULTS: At some point, the sidebar transitions over to the left a bit, sliding under the video, but with its text overlapping the video EXPECTED RESULTS: Sidebar should either allow itself to be pushed offscreen, or should move somewhere else where it doesn't block the content.
Created attachment 8476051 [details] screenshot (partially redacted, since it's from live-stream of internal meeting) Here's a screenshot of a live stream where I hit this, with a red arrow pointing at the overlapping text. This is in up-to-date Firefox Nightly, with a fresh profile. 34.0a1 (2014-08-20) Mozilla/5.0 (X11; Linux x86_64; rv:34.0) Gecko/20100101 Firefox/34.0 (I see the same result in Firefox Release, too. So, presumably not a browser bug/regression. Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:31.0) Gecko/20100101 Firefox/31.0 )