https://bugs.winehq.org/show_bug.cgi?id=38363
--- Comment #1 from Nikolay Sivov bunglehead@gmail.com --- Unfortunately it's more complicated than that. TCIS_BUTTONPRESSED works differently with comctl32 version 5 and version 6. Version 5 only uses this state when TCS_BUTTONS is used, and it matches documentation. Version 6 uses it for all styles it seems.