Since the interface update from Dragonflight my All The Things settings now look like this:

It seems like every label has been centered and/or cut off. Some labels only show 2 or 3 letters and have no tooltip when you hover over them, so basically you can't figure out what it does. Is there any way to fix this?

The images showing are just 2 tabs, the rest of the settings also have this problem.

It indeed seems like it has something to do with ElvUI. Turned ElvUI off to check it out and there seems to be no issue now.
I don't know which setting changes it exactly.

This is a conflict with some UI addon, ElvUI or the sort. Try playing with their settings.