Keyboard backlight doesn't power off on shutdown

When I shut down my pc through Linux, the keyboard backlight stays on, but when I shut down my pc through Windows, the backlight turns off. Restarting to Windows to then shut down, or manually turning off my keyboard backlight with the fn key are very unconventional. Is there a way to turn off my keyboards backlight before shutting down?
The keyboard in question is Metoo Zero.
Random stuff I came by:

  1. /sys/class/leds/input3::capslock/device/capabilities/led is set to 7, and I can’t change it. The value also ain’t changing regardless of what I do with the keyboard.
  2. the only stuff in /sys/class/leds/ regarding my keyboard are the caps, scroll and num locks.