I had a lot of the same issues other people mentioned with the text bubbles showing visual glitches at certain zooms, especially with a Rimworld camera mod enabled (I'm currently using SimpleCameraSetting because I don't like the mod screen ads in Camera+). So I decided to tweak the mod settings for Interaction Bubbles to see if I can find one that has none of these visual defects.

I was able to completely remove these visual defects, but there are a lot of complex factors involved and my compromise used a lower maximum visible altitude than the default, however for me, this is actually better since I don't want to be able to see interaction bubbles when I'm very zoomed out.

Below are my settings (you can access the mod settings in Options -> Mod Settings -> Interaction Bubbles):

Auto hide at speed: Off
Base altitude: 44
Maximum visible altitude: 30
Maximum scale: 110%
Maximum per pawn: Use default or what you want
Font size: 10
Text padding X: 7
Text padding Y: 5
Maximum width: 240
Rest of the settings: Use default or what you want