I have GMKtech K9 plus. Libreelec is not reacting at on pressing physical power off button on NUC.
I tried everything menioned here: LE 11.0.4 power off (suspend) problem - 2 different NUCs
I used Keymap editor but it does not react on pressing the button.
When I initiate KODI from Batocera it works as expected.
I suppose that it is issue on OS level but I struggle to find out what to try next.