Do any of you 750 owners have seen this before?
Lately (a week or so ago) I started to get calls and the "notification" popup won't come up. I hear the ring and vibrate and there is a phonecall icon on the top bar next to the data arrows but the notification is missing so I can't see who's calling.
If/when I answer I can finally see the caller information.

This doesn't happen with every call (probably with about half of them per day).

Any idea or did you hear about something similar?