Understand why /dev/input/event* don't have correct permissions and submit fix upstream
!1038 (closed) provides a temporary fix to this bug. The permissions are set to something usable on Android init (see /anbox-init.sh), but it looks like permissions are sometimes rolled back to u0_a0/700 instead of system/700.
Figuring this out would allow avoiding the hack, and make Anbox a better piece of software.