The issue isn’t binding, it’s that both the IKEA remotes and the Xiaomi plugs put themselves in Zigbee group 0 automatically, which means that the IKEA remotes send messages to that group, and the Xiaomi plugs respond to those messages automatically.
It’s something that can’t be fixed with Homey (ideally, the Xiaomi app would assign these devices to a different, random, group to prevent this issue, which is what zigbee2mqtt does), and I don’t think it can be fixed with another controller because groups are reset when the device is reset (which is required for re-pairing).
