[solved] Deconz: Aqara window sensor using wrong item values

I am using openhab 2.5 in connection with the conbee 2 stick (deconz binding) and some aqara window sensors.
Now there is the problem, that 2 of the 3 installed sensors always show the same item state in openhab, but in the phoscon webapp the state is shown correctly. But the 3rd sensor is working independently of the other two sensors and the values are correct…
I think there could be a bug in the deconz binding. Can anyone confirm this behaviour?

Edit: A reboot helped to get the items working now.