I just updated to 12.1-MASTER-202009110438 from 12.0-MASTER-202006220424.
I use for all my samba shares the user "root" as the login (I know, not the most secure thing to do).
Now after the update, the root user got the "Samba Authentication" unchecked. I tried to activate It again, but If I check the box and press save I get the error: "Password must be changed in order to enable SMB authentication". If I now type in a new password(or the current password) and click save I get: "This attribute cannot be changed".
So now I can't use root for samba auth. I don't think that this is intended behavior, right?