LibreCAD starts out of screen when used Multimonitor-Setup in the past

I have the issue, that Libre-CAD starts out of screen in Windows 10 since I have used a Multi-Monitor-Setup in the past. Now I changed the Monitor configuration so I use two instead of three monitors and it appears that LibreCAD tries to display on the third monitor. I use Windows 10 so usually it is possible to bring back such windows by Win+Arrow-Keys but LibreCAD won't show up. I even tried the last RC and reinstalling the tool but it didn't help, I hope you can help me finding a solution. :)

I got this. The old Monitors were 4K displays. So I changed the Reg-entry "Software\LibreCAD\LibreCAD\Geometry\WindowX" to 0 and it is back on my screen. Hope this will help others with the problem