Problem with Shelly Bulb after update to OH4.0.2


I’ve updated my OH-installation from 3.2.0 to 4.0.2. My OH is running in a docker container on a Synology NAS. I’ve many Shelly Bulbs (Dou RGBW; E27 and GU10).

Since I’ve updated, I can’t change the mode (color / white) anymore. I’ve tried to configure a new bulb (with the UI). Same problem. I can turn the bulb on and off an can change the color, only the switch for the color/white-mode doesn’t send a message to the bulb.

Has anyone an idea to fix it?