Child Bridge does not work, no feedback from CCU

[padman74]

I tried to put the plugin into a child bridge. Then i recognized that commands to CCU are sent but the plugin does not reeive a response. E.g. when i turn on the light, the light turns on but in Homekit the status shows still off. After i changed back to main bridge, it worked again. I tried to restart CCU and HB, without success.