Brightness resetting to 100% after powerdevil turns the screen off

title

before 6.3, powerdevil randomly did not answer to increase/decrease brightness after comming back fromm a screen off, and I got it fixed by running systemctl --user restart plasma-powerdevil.service

however now I get a somewhat different problem, the screen is always back at 100% brightness after a dimming and then screen off, although powerdevil is still responsive to increase/decrease brightness shortcut

it's not a laptop, and therefore there is only one power setting running on - AC - via DP

Has anyone else experienced this ?