https://bugs.winehq.org/show_bug.cgi?id=47885
--- Comment #4 from Vincent Povirk madewokherd@gmail.com --- I don't know how it behaves now, but I had it set up to set fullscreen mode, which has the side-effect of removing decorations (but without having to set any other hints). This allows virtual desktop to be used as a work-around for windowing problems when you still want fullscreen.