I installed openSUSE Tumbleweed with KDE a few days ago and ever since then I have an audio issue with Firefox.
When I play music on YouTube it sets the audio level much lower in the Audio Volume widget than it's supposed to for this one tab. I can raise the volume in the widget just fine but if I touch the player it automatically resets it to the lowered volume. The lowered volume level is consistent when it resets for one music video after I touch the player but inconsistent per video. Most normal YouTube videos don't seem to have this problem. As far as I can tell this problem is exclusive to Firefox. Librewolf, Brave, and VLC work just fine.