See https://github.com/whatwg/html/pull/5769 and tests added at https://github.com/web-platform-tests/wpt/pull/24405.
<rdar://problem/66579074>
The unprefixed preservesPitch will be in Firefox 101: https://bugzilla.mozilla.org/show_bug.cgi?id=1652950 That will leave WebKit-based browsers as the only ones requiring a prefix for this.
Pull request: https://github.com/WebKit/WebKit/pull/17111
Committed 267341@main (1c1403188ee9): <https://commits.webkit.org/267341@main> Reviewed commits have been landed. Closing PR #17111 and removing active labels.