Hi Mario,
Actually when I send "BIND REQUEST" to a bulb or with Mesg type = 0x0030 for ON/OFF cluster (which is in INPUT CLUSTER), from the co-coordinator (IoT Control Bridge) it works fine. But when I tried the same with LUMI mini switch (ZigBee device ID = ON_OFF_Light_switch) it is not working, the only difference is that the ON/OFF cluster is in OUTPUT CLUSTERS.
Whenever I send "BIND REQUEST" for ON/OFF cluster in Lumi mini switch, I am getting Bind response as successful and if I see the sniffer logs, the switch is sending the ON/OFF events to the coordinator (IoT control Bridge), but I am not receiving any data on the ZGUI tool.
In my testing and development, I think that the Bind request only works for INPUT clusters, but in my case the ON/OFF cluster is part of OUTPUT clusters.