I assume these are BT HID devices or keyboards?
Can you see a new input device appearing in /dev/input or dmesg or udev log?
Can you see the keypress while running evdev_trace -t?
Theory being the device is either not recognized as an input device (udev), or it sends a key/button event that is not handled ( which then is either handled via mce, or lipstick/wayland/xkb).