http://bugs.winehq.org/show_bug.cgi?id=58892
--- Comment #3 from MT Unixic moetazoug@outlook.com --- (In reply to Zeb Figura from comment #2)
(In reply to MT Unixic from comment #1)
i figured it out
What did you do?
you don't need to add in any extra window rules or any extra environmental tables aside if you have a separate prefix for your fl, simply double click on it's top left side to window it so it wont be full screen, from then just tile it with MOD+T or whatever you set floating toggle to.
literally that's it. (can't believe i spend days on this just for the fix to be this)