Hello,
I am wondering if there is something about the multiple profiles I do not understand or it is a bug in the specific app.
I wanted to replace the standard SMS Messaging app and picked https://github.com/octoshrimpy/quik as candidate. I use a dedicated profile to install the apps, not the owner profile. So I have installed this app in that profile and also in my "main" user profile. The app did show the existing messages etc. Today I tried to send a message with it and it displayed "sending failed". I did not spot anything interesting in the logs. Permissions were OK. Intuitively I have decided to try something: install it in the Owner profile as well. After I have done it, everything started working as expected - even in my "main" profile, I was able to send SMSes.
I wonder if there is something special about the messaging app functionality or its platform integration that requires it to be installed in the Owner profile in order to work correctly in another profile?