https://bugs.winehq.org/show_bug.cgi?id=55810
--- Comment #5 from Béla Gyebrószki gyebro69@gmail.com --- (In reply to Zeb Figura from comment #4)
Wait, so in the broken case the virtual desktop itself is missing its decorations? That's bizarre, I have no idea how that's even possible.
Yes, that's what I was trying to describe with my limited English knowledge :)
Could be a quirk with the window manager I'm using (XFCE).