In the HTML spec we are changing the :open pseudo selector for popover elements to :popover-open, and making popovers stop matching :closed. Here is the spec PR: https://github.com/whatwg/html/pull/9077 Here are tests: https://github.com/web-platform-tests/wpt/pull/39222
Rob, Is this something you could take a look at?
Pull request: https://github.com/WebKit/WebKit/pull/12372
<rdar://problem/107755207>
Committed 262764@main (a1dda9cba6d9): <https://commits.webkit.org/262764@main> Reviewed commits have been landed. Closing PR #12372 and removing active labels.