Strange Problem with Philips Hue

Hi Guys,
I have a very strange problem with my Hue lamps. Until recently, integration into my system worked wonderfully. Both pure white, Bloom and Color lamps were easily switched by switch and also by rule. Suddenly, however, the color lamps stopped switching. I tried to integrate this new in openHAB, to add new in the original app, everything. Switching the affected lamps via Philips app still works smoothly. Is there anyone with an explanation?
System Details: openHAB 2.2.0 Release Build on a RaspberryPi3, Hue Bridge 2.0 (SW 1711151408), Hue Color Lamps (SW

best regards