I have Lidl remote switch ( FB20-002 and light bulbs HG07834C. They came in the same packaging and seemed to have direct binding.
I want to use the remote and light bulbs separately, but even if I don’t have any automation configured - the remote still turns off the light bulbs and I don’t want it.
Is there any way to break direct binding between the remote and the light bulbs?
If you are using ZHA you should be able to do it with zha toolkit.
Zigbee2MQTT has its own way of editing bindings.
I am using zigbee2mqtt and those factory-set bindings are not visible there. I tried to unbind all clusters anyway between devices, but it didn’t make any difference.
Reseting the bulb to factory and re-pair it with Z2M doesn’t help? 
I tried to remove both - the remote and the light bulb - and re-added them using the pairing combination. Doesn’t help
That wasn’t, what I was asking for. 
Did you factory reset the bulb? Removing it from Z2M doesn’t change the bulb.
How can I factory reset the bulb? I did do the multiple power off/power on to put it into pairing mode. Isn’t it the factory reset?