Possible bug bright white flash before lowering brightness

[ACenTe25]

When I use the XFMonBrightnessDown keybinding for brightnessctl set 10%- either in Ubuntu, XFCE, i3 WM or Qtile WM, the screen briefly flashes (very brightly) before setting the desired brightness level.

This doesn't happen with the XFMonBrightnessUp keybinding for brightnessctl set +10%, and it doesn't happen either when I run the brightnessctl set 10%- directly in the terminal.

Since this doesn't seem to be an issue with Ubuntu, XFCE, i3 or Qtile (they all behave the same though keybindings work in different ways for each), and since it doesn't happen when increasing brightness, I'm inclined to think it's a bug in brightnessctl.