html.elements.video - did Safari drop support for disablepictureinpicture?

What type of issue is this?

Other

What information was incorrect, unhelpful, or incomplete?

It looks like Safari has removed support for the <video disablepictureinpicture> attribute

What browsers does this problem apply to, if applicable?

Safari

What did you expect to see?

• Adding the disablepictureinpicture attribute to a <video> element should remove the UI to enter picture-in-picture mode for a HTML video player

Did you test this? If so, how?

Using the HTML demo on the MDN documentation page: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video

Here are the steps I used in the video. This was with Safari Version 17.6 (18618.3.11.11.6, 18618)

1. Show that PiP is enabled by default
2. Remove controls attr to confirm that the <video> element is recreated accurately when input changes
3. Add disablepictureinpicture attribute
4. Show that PiP is not disabled

https://github.com/user-attachments/assets/d25eb70b-a89d-4f11-9429-6c9de55cc6d3

Can you link to any release notes, bugs, pull requests, or MDN pages related to this?

No response

Do you have anything more you want to share?

This video shows the same steps working as expected in Chrome Version 128.0.6613.120

https://github.com/user-attachments/assets/e9d0bf36-8bfd-4c46-82c8-0d6519271ce8

One more thing of interest

This is an edge case but it might be worth noting that it is possible to disable picture-in-picture video globally inside a WKWebView in iOS using the WKWebViewConfiguration. allowsPictureInPictureMediaPlayback property

MDN URL

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video

MDN metadata

MDN page report details

• Query: html.elements.video
• Report started: 2024-09-09T19:22:05.339Z

Start with the MDN HTML video page and the browser-compat-data query html.elements.video, then verify the reported behavior against Safari 17.6 and current Safari support information. Done means determining whether disablepictureinpicture is supported as documented and updating the compatibility data if the report is confirmed.