fgafr
This was the solution for me. Totally counter intuitive. I never in a million years would have suspected disabling location permission would've fixed it, but it did.
Anyways I always type the parking number into the app, the app using location never helped me use it.
This thread has solved the mystery but not the problem.
I have a Pixel 8 and use Google Messenger on ONE secondary profile and I'm getting double SMS sent out. I really want to sandbox Google Messenger into a secondary profile and not allow it to be running as my default SMS across all the profiles.
IF I have to choose I will return to the default SMS app and wait for the day that this default app includes RCS.