Bug 189052

Summary: [iOS] onwebkitfullscreenchange/onfullscreenchange present, but not firing when target is video element
Product: WebKit Reporter: Jack Wellborn <w0nka>
Component: DOMAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: fred.wang, jeremyj-wk, jer.noble, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: Other   
Hardware: iPhone / iPad   
OS: Other   
Bug Depends on:    
Bug Blocks: 206854, 276855    
Attachments:
Description Flags
onwebkitfullscreenchange
none
onfullscreenchange none

Jack Wellborn
Reported 2018-08-28 10:57:34 PDT
Hello, iOS 12 Safari/Webkit introduces support for the `document.onwebkitfullscreenchange`. While this event seems to work when non-video elements request fullscreen, it does not work with the `<video>` element. Here is an example that requests full screen on a `<div>` and `<video>`, and console.logs when `onwebkitfullscreenchange` is fired: https://jackwellborn.com/playground/videoFullScreenTest.html. The example fires `onwebkitfullscreenchange` for both the div and video in Desktop Safari Technology Preview (Release 63 (Safari 12.1, WebKit 13607.1.2.1)) as expected, but only fires it for the div in iOS 12 Public Beta 8 or 9. Let me know if you need any more clarification or have follow questions. Thanks. ~Jack
Attachments
onwebkitfullscreenchange (563 bytes, text/html)
2026-10-13 04:26 PDT, Frédéric Wang Nélar 		no flags
Details
onfullscreenchange (551 bytes, text/html)
2026-10-13 04:26 PDT, Frédéric Wang Nélar 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2018-08-28 19:49:30 PDT
<rdar://problem/43826046>
Jer Noble
Comment 2 2018-08-29 09:48:02 PDT
Jack, as a workaround, you can listen for the legacy 'webkitbeginfullscreen' and 'webkitendfullscreen' events.
Jack Wellborn
Comment 3 2018-08-29 10:18:55 PDT
Thanks Jer. That is exactly what we are doing.
Jack Wellborn
Comment 4 2018-08-29 14:37:32 PDT
Is there anyway I can track bugs I submit when they go into Radar?
Jer Noble
Comment 5 2018-08-29 15:20:23 PDT
Jack, the work will happen here in this Bugzilla bug, so this is the best place to track your issue.
Lucas Forschler
Comment 6 2019-02-06 09:19:05 PST
Mass move bugs into the DOM component.
Frédéric Wang Nélar
Comment 7 2026-10-13 04:26:28 PDT
Created attachment 481788 [details] onwebkitfullscreenchange
Frédéric Wang Nélar
Comment 8 2026-10-13 04:26:39 PDT
Created attachment 481789 [details] onfullscreenchange
Frédéric Wang Nélar
Comment 9 2026-10-13 04:32:45 PDT
I confirm the bug is still present on ipad and ios with fullscreen api enabled. same for the standard onfullscreenchange. on desktop it works as expected.
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