https://bugs.winehq.org/show_bug.cgi?id=52745
--- Comment #4 from Hildo Guillardi JĂșnior hildogjr@gmail.com --- I just have primary and secondary display.
1) Open de software; 2) Put the window at the secondary display (which at Ubuntu 20.04 do not have a clock or system title bar); 3) Click on maximize at the ATPDraw window.