Intermittent problems on Pixel 7 Pro here, for most of a year, now.
Sometimes, it seems that problems re-emerge after an update and then settle down after a week, or so. Discovered today when outbound messages were disappearing/unsent from stock app in secondary profile that I had missed several texts over the last few days (visible only in Admin profile). Problem may be (primarily) associated with SMS/MMS in secondary profiles. I've had more problems with MMS. Also I think there are problems trying to use non stock app.
I know Devs have their hands full, and I'm so grateful for GOS, but I agree that this bug needs a clear acknowledgement.