When I switch from a pc with 4k resolution to a full hd notebook, I cannot find the Placeables GUI anymore. GUI position should be reset if outside screen.

I'm having a hell of a time replicating this, every time I try changing resolution with the GUI in random corners it manages to stay on the screen.

I remember something like this being an issue a loooong time ago, and I was never truly able to fix every single edge-case, but in theory just resizing the window once should force the GUI to re-appear on the screen.

The problem is there is no event that triggers when the screen resolution changes (or atleast there didn't use to be). Usually stuff like this isn't a huge issue for most mods, but My mod is meant to stay on the screen all the time so shenanigans like this can occur, and I really don't want to add a continuous check as I try really hard to keep the amount of calculations this mod does to a minimum.

If resizing the window doesn't force it to re-appear, I could be convinced to implement a command or something to reset its position, but typing that command should take way longer than just resizing the window once or so.

Thanks for the resize tip. I will check that.

There is no need for multiple checks. Just check ONCE when the save game is loaded.