https://bugs.winehq.org/show_bug.cgi?id=39547
--- Comment #3 from Robert Munteanu robert.munteanu@gmail.com --- (In reply to comment #2)
To make tool tips not to steal focus on Photoshop Cs6 (and maybe others apps too) I modified /dlls/user32/win.c .
If you found a fix that's great! Maybe you want to take a look at https://wiki.winehq.org/Submitting_Patches and submit the patch to the project, not everyone where is able to rebuild wine easily :-)