Cannot change UI & Dialogs from being too large

I'm sorry if someone has already posted this issue within the past five years with a solution, but I couldn't find one in the sea of "UI too small, pls halp." Hard time sympathizing with them when my screen looks like this:

I've heard about the -x [factor] and -r [dpi] commandline flags, but those only help in making things even larger (they're suppose to be able to make things smaller, right?). I know that there's the theme preferences settings, But I Can't Change Those (other than light/dark theme)

I can alter everything else. Everything but what's in the red box. The one thing I would like to edit. However, pressing "apply" after doing so doesn't actually change anything, and closing & opening again reveals a reverted state.

Also note how the very bottom of that dialog is cut off (I put it against the top of the screen). It's a little more noticeable in the mixer.
Just a little bit. That's as small as it will go. If I want to do anything there, I have to retract the arrow, in which case I am allowed to resize the thing smaller, and then do so. But that's a whole 'nother issue that's been around for months.

It's worth mentioning that this only occurred after I updated the Extensions (I waited a few days after updating MuseScore, which in itself I waited for because the new dynamic playback features affected my scores). Notice how the background colour is a dark gray (It wasn't like that before!).

A factory revert did help with the text size and not being able to edit the preferences,
but I've already written this thing, so I guess this will be a bug report & rant about dialog sizes, because those aren't affected by the settings.

Windows 10, MuseScore 3.2.3.7635 (windowed), 1080p Res