After a recent update of either GrapheneOS or Linphone I have noticed a strange thing. When Linphone is ringing, I can no longer switch the profiles. All profiles are greyed except the current one. Once the call disconnects, the profile switching is re-enabled again.
I think it was not like this before.
It seems the problem is limited only to the owner profile. E.g. if I am in a non-owner profile different from the one where Linphone is running, I can switch to another profile and answer the call. However, if by mistake I am in the owner profile, then it is impossible to switch and answer the call.
This is quite annoying because when I close a profile that I use infrequently, I automatically end up in the owner's profile. Not in my "main" user profile. I have to switch specifically to that profile, otherwise I will miss a call.