In HA I have created 6 groups in zigbee2mqtt: living room, dining room, bedroom, canopy 1, canopy 2 and garden lights. In the garden lights group there are 2 lamps, when I turn these on, a few other lamps in the living room are also turned on, also when switching off these lamps go off. If I turn the lamps on or off individually it works fine, only not in the group. Who knows this problem. I have also added them completely again once.
I created a 7th group en put the 2 lights in there, than it works normaly, it looks like group 6 is corrupt or something.