Calendar events has stopped working, completely or partially. No event info is shown on the watch or in the preview on the phone. Sometimes only the first event is shown (c1t), sometimes none, and sometimes all. The problem exists for all watch faces that uses the calendar tags. All other calendar apps such as calendar widgets on the phone and the agenda app on the watch works fine. Restarting the phone or watch does not seem to solve the problem but with time it resolves itself until it stops working again.
The problem began a few days ago but I haven't owned the watch for that long so it could have been a problem earlier as well since it comes and goes.