https://bugs.winehq.org/show_bug.cgi?id=34594
--- Comment #12 from Dmitry Timoshkov dmitry@baikal.ru --- Created attachment 56536 --> https://bugs.winehq.org/attachment.cgi?id=56536 patch
Chessmaster's menu implementation depends on WM_WINDOWPOSCHANGED message sent to (a being deactivated) menu window when one clicks on the main window.
Attached patch fixes the problem with menu deactivation in Chessmaster, but may be a not proper fix, and there might be some side effects.
This needs more investigation.