Sudden global vertical spacing offset

What Happened?

All of a sudden, every single one of my bullets, globally across the entire document, even when collapsed, started taking up 2 lines instead of 1. The first line was just a line break and nothing else.

Reproduce the Bug

I have no idea what caused this, or how to replicate.

Expected Behavior

Expected: That this never happens.

Screenshots

Desktop or Mobile Platform Information

MacOS 26 (Tahoe)
Desktop app (IDK version; new. I downloaded it last week).

More info