problem with gledopto GL-C-008P on z2m 2.0.0

[tmazza79]

Hello,
I have a problem with a gledopto GL-C-008P controller which I removed from another zigbee network (version 1.30.3) running on a raspi 4 and connected to a new one running on a raspi zero 2 w, z2m version 2.0.0. The controller misbehaves in the z2m 2.0.0, with the color temperature slide affecting the brightness, such that sliding towards cold dims the light. it looks like the cold white does not work. It is a similar issue as depicted here #21988, yet I am not sure it's a firmware issue on my side: I have another gledopto controller, same model, same firmware, running on the other zigbee (old version) and the behaviour is normal. Maybe it's a compatibility between the firmware and the new z2m version? The controller worked just fine in the 1.30.3 and as mentioned the other identical GL-C-008P controller still in the old network also works just fine,
Firmware update check shows the device is up to date.
I posted a comment to #25440 with this issue but I realized maybe a discussion under category "devices" is more appropriate.
thanks for any help!