Randomly looking at the Xorg log file, and WTF?
[ 12159.134] (II) config/udev: Adding input device SOUNDBOX (AVRCP) (/dev/input/event4)
[ 12159.134] (**) SOUNDBOX (AVRCP): Applying InputClass "libinput keyboard catchall"
[ 12159.134] (II) Using input driver 'libinput' for 'SOUNDBOX (AVRCP)'
[ 12159.136] (II) event4 - SOUNDBOX (AVRCP): is tagged by udev as: Keyboard
[ 12159.136] (II) event4 - SOUNDBOX (AVRCP): device is a keyboard
Uh. No? Those are bluetooth speakers?