Bug: UI gets THICC when saving while playing back

I'd just installed the Musescore General HQ and Marching Percussion extensions, when a few things happened:
1. My font reset and turned comically large. Had to manually change it back which was a struggle in its own right.
2. The voices changed colors to less saturated tones which was a bit disorienting.
3. Musescore's UI (specifically, the score tabs and the bottom info bar) suddenly bloated. No seriously, look at the image. What the heck?
It fixes itself on restart, but I can replicate it sometimes when I cause the app to hang, like when I save the score while it's playing. And when I stop the playback the note input bar gets bigger as well (seen in the image).
This only started happening after I installed the two extensions mentioned above. I'm not sure which is responsible, but if I had to hazard a guess it would be the Marching Percussion extension. Has this happened to anyone else?

Edit:
Synthesizer and mixer go all weird as well.

Inspector as well

Also, my palettes appear to have changed?