So I'm having a problem in QGIS 3.12 where the text for certain buttons, menu items and messages is improperly spaced/positioned within the UI, and in many cases, is totally hidden from view. Additionally, in many parts of the UI the scroll bars are tiny, to the point where they can't be used, most irritatingly when viewing attribute tables.
These issues are making QGIS borderline unusable for what I need to do.
I believe part of the cause has to do with the fact that I changed the aspect ratio of my computer as I recently reconfigured my display setup with a second monitor. However multiple resets of the aspect ratio settings has been of no avail and neither has a reinstall of QGIS.
No other software on my computer has this issue.
My question: How can I fix my text and UI problems with QGIS?
Edit: Here is an example of how some of the text looks like. Note that there are entries in this list that aren't visible.
Edit 2: So it turns out that resetting the computer itself was what was required. I did change the settings as per the comment below and reset but I don't know if the changes were required.
If you encounter this problem yourself, first try just resetting your computer, and if that doesn't work, try changing the settings as below.
UI Theme
option asdefault
in "Settings > Options > General > UI Theme"