Wrong Units, should be mm but shows in

[plojscherEinsatz]

Hi there, my illustrator shows inches instead of millimeters at one important position. in the settings i specified mm. the ruler shows mm but the first four fields are somewhat bugged. what can i do?

[Ton Frederiks]

That is indeed strange. Did you try the standard things like restart your machine and reset preferences?

https://helpx.adobe.com/illustrator/using/setting-preferences.html

[plojscherEinsatz]

yes. i did that. i even reinstalled the app

[Ton Frederiks]

Does that happen with every document?

[plojscherEinsatz]

only with newly created ones. i just opened up a random file from a while back and there it works like expected

[Ton Frederiks]

Does it happen when you create a new file based on another profile like web 

[plojscherEinsatz]

interestingly it works normal if i select a web profile for a new document and change the units to mm. seems to happen with my personal profiles for new files, although they are set to mm from the beginning.

[Ton Frederiks]

Can you check the New Document Profile that was used to create this document?
Try to open the file (Print or Art & Illustration, Web) that you used when creating a new file and check the File > Document Setup for Units?
You can find them here (on a Mac):
/Users/your username/Library/Application Support/Adobe/Adobe Illustrator 28/en_GB (or your language folder)/New Document Profiles/Print.ai
on Windows it would be something like:
%AppData%\Adobe\Adobe Illustrator <version> Settings\<locale>\x64