STEPS TO REPRODUCE
1. My setup: [Screen1: 16:10@1650x1080] [Screen2: 21:9@2650x1080 <- sits on the right side, set as the main display], nvidia gtx 980
2. Install KDE fresh (tested Kubuntu and KDE Neon)
3. Open and close some windows, try to use the "place at center" option
No one program opens where i last left it, not to mention it opens with diffrent size than i left it. And "place at center" places them at the center of my secondary display, it should do so on the primary.
Windows should all remember where they were and their size.
KDE Plasma Version: 5.19
KDE Frameworks Version: 5.68
Qt Version: 5.12.8
*** This bug has been marked as a duplicate of bug 15329 ***