Hey there!
I installed GOS on a new Pixel 7 using web guide. As per recommendations set up few profiles. One master(owner) - no accounts, just installs apps and controls the device. One for spyware of Google, Facebook with limited permissions and one for regular usage.
No other SMS app receives messages in regular user than the included one and Google one. Tried Fossify messages, QkSMS (QUIK SMS) and Deku SMS (which doesn't even include past massages).
Works in master and in spyware flawlessly.
Checked all the permissions, same. Checked permissions for GFS, play services and store, same. Fossify receives message after a while but no notification or sound. Need to open the app and wait few seconds to receive.
QUIK SMS never receives the message unless I force the sync again.
Google messages gives immediately sound and notification but I am not keen to use it as it's Google and it gives only "New message" notification with no content and no name or number.
Included app gives instant notification and receives SMS immediately but it looks like from Gingerbread times and also gives only "New message" notification.
When testing I always set all the permissions asked and set as default.
Have you experienced similar behaviour? What might be the culprit?
Thanks