https://bugs.winehq.org/show_bug.cgi?id=47815
--- Comment #9 from Rosanne DiMesio dimesio@earthlink.net --- (In reply to Olivier F. R. Dierick from comment #8)
On my Debian system, I can still hit alt+space to open the window menu and select 'move' and then move the window with the mouse or keyboard until I click or hit enter.
In KDE, alt+space brings up the search bar. I can move the virtual desktop by holding down alt and click-dragging anywhere in the window, but only for apps running in windowed mode within the virtual desktop. That doesn't work for games running fullscreen in a virtual desktop, and having the desktop stuck in the upper left is very annoying.