Disable JavaScript and load this page: https://www.w3.org/2010/05/video/mediaevents.html No way to play the video. Videos should be playable by the user even if JavaScript is disabled. (Disabling JavaScript in the tab should not disable it in the <video> element's shadow DOM)
<rdar://problem/32035810>
*** Bug 200433 has been marked as a duplicate of this bug. ***
This is one specific instance of a larger problem. There's some related discussion in bug #192753.
*** Bug 211886 has been marked as a duplicate of this bug. ***
Pull request: https://github.com/WebKit/WebKit/pull/2931
*** This bug has been marked as a duplicate of bug 243155 ***
gah, my bad
*** Bug 243155 has been marked as a duplicate of this bug. ***