Edit text on public shared link with NC14


I don’t know if it’s a normal behavior but on an uploaded text file, logged users can edit the document online whereas if they access the file via a public shared link the edit is not available they can only download it.

So is it normal?

I’m using NC14.0.2 on ubuntu 16.04.
I checked the app editor is not limited to groups.

Many thanks by advance for your lights.