User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:61.0) Gecko/20100101 Firefox/61.0 Build ID: 20180406220121 Steps to reproduce: Go to any video file (only tested webm and mp4) and enter fullscreen mode. Actual results: The mouse cursor doesn't appear over the video content, but does appear over the overlay. Expected results: Cursor should appear over the video as well. Mozregression pointed to bug #1449532.

I can confirm the problem. Open any video from https://videos.cdn.mozilla.net/uploads/mozillaorg/ Go Fullscreen and then Move mouse

I removed this line without restoring it. Sorry about that. https://hg.mozilla.org/integration/autoland/rev/62e9d302879c#l5.244 I must have overlooked it because "force style resolution" two lines above is very catchy...

Comment on attachment 8966101 [details] Bug 1452342 - Toggle cursor visibility correctly in video fullscreen mode https://reviewboard.mozilla.org/r/234846/#review240478 r=me, sorry for missing this in the review... ::: toolkit/content/tests/widgets/test_videocontrols.html:382 (Diff revision 1) > +add_task(async function ensure_fullscreen_cursor() { > + video.removeAttribute("mozNoDynamicControls"); > + video.play(); > + await waitForEvent("play"); > + > + synthesizeMouse(video, fullscreenButtonCenterX, fullscreenButtonCenterY, {}); What guarantees that the button will still be visible at this point? Won't the controls hide once the video starts playing?

Comment on attachment 8966101 [details] Bug 1452342 - Toggle cursor visibility correctly in video fullscreen mode https://reviewboard.mozilla.org/r/234846/#review240478 > What guarantees that the button will still be visible at this point? Won't the controls hide once the video starts playing? Right. I've switched to `video.mozRequestFullScreen();` instead (with `full-screen-api.allow-trusted-requests-only` set to `false`).

Pushed by timdream@gmail.com: https://hg.mozilla.org/integration/autoland/rev/ea27d33d3920 Toggle cursor visibility correctly in video fullscreen mode r=Gijs

Issue was reproduced on Nightly 61.0a1 from 2018-04-06 on Windows 10x64. Confirming the fix with 61.0b12 on Windows 10x64, MacOS 10.13 and Ubuntu 14.04.