Hahumm, how do I get #KDE to save window positions per monitor?
Thing is, I have the internal laptop screen, and an external one. Internal is 4k, external is 5k. Usually I only use external.

Now, I have an #HDMI switch, and whenever I switch to a different input, #KDE thinks the external monitor is gone missing. It turns on the internal one (annoying already), but as that is only 4k, it moves all windows around.
Now when I switch back, the external comes back, internal gets turned off.

But all window positions are gone. Instead of being on the middle, left, all over where I left them, they all crowd on the right side. And I have to press keys, on all virtual desktops, to get things back to useful.

Each and every time. (Except for the #Emacs window, that stays where it is, but it is the only one. Whyever.)

I probably could script myself something using wmctrl, I guess, but meh, I would expect a Window Manager to be able to deal with that on its own. But can't find the right setting.