[wp-trac] [WordPress Trac] #32597: mediaelement.js high CPU usage in Firefox

[WordPress Trac]

#32597: mediaelement.js high CPU usage in Firefox
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 Reporter:  afercia             |       Owner:  (none)
     Type:  defect (bug)        |      Status:  new
 Priority:  normal              |   Milestone:  Awaiting Review
Component:  External Libraries  |     Version:
 Severity:  normal              |  Resolution:
 Keywords:  close               |     Focuses:
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Changes (by desrosj):

 * keywords:   => close


Comment:

 Replying to [comment:6 afercia]:
 > googling for "firefox bugzilla css animation cpu" returns some related
 bug reports on the bugzilla bug tracker.

 Thanks for the link. The wording of your report made it seem like you had
 a specific bug in mind.

 > Test it and hide the animated element with `display: none` or removing
 it from the DOM? :)

 I should have clarified that I am unable to reproduce the issue locally in
 `trunk` using Firefox nightly (`82.0a1 (2020-09-15)`) on MacOS 10.15.x. My
 machine surely has more resources than the older machine you mentioned in
 your original report, but I did not observe any significant increase in
 memory usage (at most, a few MB).

 My recommendation to close still stands. Helping to fix this in Firefox or
 requesting a less problematic loading indicator in MediaElements would
 have a much greater impact.

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Ticket URL: <https://core.trac.wordpress.org/ticket/32597#comment:7>
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