Incoming SMS not processed after PinePhone modem restart
The PinePhone modem is notorious for sometimes crashing (for me, around once a day on average). These days, the automatic restart that is done in the lower layers of the stack mostly works: the connection status is correctly displayed by the indicator from plasma-mobile, phone calls and sending SMS work, and the issue where mobile data would always get reenabled even when not wanted was fixed by plasma/plasma-mobile!226 (merged).
Unfortunately, after the modem restarts, Spacebar neither notifies about nor displays any incoming SMS messages. They are received and queued correctly by ModemManager, but Spacebar does not see them. Only after I reboot the entire PinePhone, I get the incoming SMS notification immediately and Spacebar shows the message(s), with the original time stamp. So at least they are not lost, but not getting the notification right away is problematic. Especially since everything else seems to work, so it is not even obvious that the modem has restarted and hence that Spacebar stopped listening.