RESOLVED CONFIGURATION CHANGED 194349
Video overlays sometimes disappear 
https://bugs.webkit.org/show_bug.cgi?id=194349
Summary Video overlays sometimes disappear
Dayton Lowell
Reported 2019-02-06 11:24:20 PST
Steps to reproduce: 1. Go to a site that has a video overlay in STP. I can reproduce here: https://www.apple.com/investor/earnings-call/ and also on Twitch.tv and YouTube(seems to be a bit harder to reproduce here). 2. Play the video 3. While the video is playing, mouse over the video, and back out(may have to do it multiple times) Expected Results: The overlay controls appear and disappear correctly based on the mouse-over state. Observed Results: The overlay will sometimes be in a confused state where the overlay doesn't appear on mouse-over but the buttons are still clickable(you'll get different cursor-pointers when you mouse-over where a button would be and clicks perform the desired action) Additional Notes: * I started noticing this bug at least as far back as STP 73. * On the Apple earnings call video, I can look at the inspector and see that the user-hover and mouse-leave classes are being applied correctly for the expected state. It seems to only be an issue with the rendering of the video controls themselves. * This bug is NOT present in the shipping version of Safari(12.0.3) on macOS Mojave(10.14.3)
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Add attachment proposed patch, testcase, etc.
Simon Fraser (smfr)
Comment 1 2019-02-06 19:24:34 PST
Is this Web Animations?
Ricky Mondello
Comment 2 2019-02-06 19:27:05 PST
Anyone following along (hi Dayton!) — does this reproduce with `Develop > Experimental Features > Web Animations` unchecked? (It'd be useful to know if it wasn't checked in the first place.)
Dayton Lowell
Comment 3 2019-02-06 19:27:57 PST
Yes, Web Animations was on when I tested. I'll test without it.
Dayton Lowell
Comment 4 2019-02-06 19:30:54 PST
I just did a quick test on the Apple earnings call website and Twitch and indeed I'm unable to reproduce the issue with Web Animations disabled from the `Develop > Experimental Features > Web Animations` menu.
Radar WebKit Bug Importer
Comment 5 2019-02-06 21:25:38 PST
<rdar://problem/47875188>
Antoine Quint
Comment 6 2019-02-07 06:59:55 PST
<rdar://problem/45965859>
Antoine Quint
Comment 7 2019-02-07 07:00:35 PST
Thanks Dayton. We already had this tracked internally at Apple, I've associated it with the relevant internal report.
Antoine Quint
Comment 8 2023-05-10 12:50:42 PDT
This was fixed for quite some time but we neglected to update this particular bug.
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