Fibaro Motion Sensor does not report/stuck

Yes, I do have the same problem after upgrading towards 5.0.0
The fibaro motion sensor triggers the motion detection or the tamper alarm. Randomly one or two do not return to their cancellation ( so the orange exclamation mark stays active and the icon keeps on blinking.
I tried several settings in parameters, removing sensors and connecting them again without result. Looks like a small bug.
Bob Smits