Open the Appearance settings and adjust the Zoom level under Advanced to anything beside 100%.
Close the app and open it again.
Bask in the glory of 100% zoom level
Environment
SYSTEM INFO:
Obsidian version: v1.6.7
Installer version: v1.6.3
Operating system: Windows 10 Pro 10.0.19045
Login status: not logged in
Insider build toggle: off
Live preview: on
Base theme: adapt to system
Community theme: none
I keep the zoom level in my vaults (on both Mac and windows) set lower than 100% and haven’t noticed any resets when closing and opening them.
When you get a chance, can you create a new test vault and put it in your home folder? Make sure the location is not in Desktop, Documents, or a sync service folder/location. Anywhere else will be fine.
I wonder if a sync service isn’t saving or loading the settings file properly.
It might indeed be something with Obsidian Git. Tt doesn’t consistently reset, just an eventual thing. I’ll report back once I’m able to reproduce it with a fresh vault.