Changing playback speed doesn't work when soundfixer is turned on.

[Snowshoe6783]

I am unable to change the playback speed of a video whenever I turn the add-on on. Another similar issue is that the playback speed resets to 1x if I turn on the add-on in the middle of a video running at any speed other than 1x. Both of these issue only affect the actual video and not the UI (which remains correct).

[valpackett]

That's just how the browser works, nothing we can do about it. (duplicate: #26, #2)