A hardly readable Font has been set all of a sudden

[manuel-plavsic]

Describe the bug
All of a sudden, a hardly readable font is being used for the entire app (including notes). It persists even if I switch workspace/profile.

To Reproduce
Steps to reproduce the behavior:

1. I don't know how this happened

Expected behavior
Use the normal font.

Screenshots

Desktop (please complete the following information):

• OS: NixOS unstable
• Version 3.195.13

[manuel-plavsic]

This issue persists also after deleting ~/.config/'Standard Notes'