Incoming calls get lost when in suspend
Since a couple of days ago (at least since 8/22, maybe longer) I've experienced a pretty severe issue with calls: When the phone is suspended, incoming calls wake the phone up (screen wakes up too), but neither does the phone ring nor does the call show up as a missed call. It's impossible to know someone called. On the other end the call rings as usual and goes to voice mail eventually. (I'm on the unstable branch with the latest updates installed.)