My previous post has been closed (Screen brightness automatically going to about 4%), but I still have this issue with the screen brightness, and have now found there is an additional “gotcha”, as, after dark, when the Night Light clicks in, there is NO way to adjust the screen brightness, except by disabling the Night Light and restarting…
Anyone?
Topics close a month after inactivity. I would recommend that you take this up at https://discuss.kde.org/ to catch the attention of the developers and the wider KDE community.