Problem with eq3 maxcube thermostats

Hello community,

since some days I have a really strange behavior of my eq3 thermostats.

I have three thermostats at the living room, one in childroom and one in the bedroom.

When I change one of the living room temperatures, the temperature is also assigned to the childroom thermostat after some minutes. That’s really bad, beacuse in case of an open window heating starts!

I’m sure, that Home-Assistant is the cause because the issue also occurs if appdaemon/schedy is disabled (running in another docker container).

I already did a factory reset of the maxcube and reconfigured everything. The issue is still there.

HA is running in a docker container and has version 2020.12.0

The system worked fine for the last two years with nearly no issues.