steam deck / vangogh internal screen backlight not turning off when dpms off is issued since kernel v6.1

Since kernel v6.1, when /sys/class/drm/card*-eDP-1/dpms is Off, backlight stays on at the previously set brightness level. If it was set to Off before suspending the whole device, backlight would stay off after waking up, but it would stay on once again if the screen was enabled and disabled again.

Kernel Version	Internal screen backlight turns off when dpms off is issued
6.0	yes
6.0.19	yes
6.1.0	no
6.1.43	no
6.2.0	no
6.3.0	no
6.4.6	no
6.4.8	no