Gräßlin: Multi-screen woes in Plasma 5.7

This is/was similar to my experience. I found all sorts of bugs with the task bar getting stuck on the wrong screen, maximise/minimise not working properly and a whole host of basic stuff - only with multi-monitor. Getting my work environment how I wanted it took an odd combination of reboots, plugging monitors in and out, trying xrandr and the other config progs and just praying. Some days I couldn't get it how I liked and would just suffer for the day.

I filled some bugs with as much info as I could, and these collected lots of me-too responses, more info and suggestions. The bugs seemed to snowball, but there was never any progress or dev involvement so the energy was wasted.

I moved to LXDE, but then with HiDPI the whole thing got just too bad again. A new laptop later and I actually use Win10 with Linux in VirtualBox. It works well enough, and I can get Vbox to do screen scaling too if needed.

The sad thing is that I remember multi screen working really well in KDE on fedora 13 or something around then. I remember undocking, all the windows coming onto the panel, then docking again and them going back to their original multi-screen layout. Hopefully we will get back to that sort of thing one day again.