Problems with Demul 0.7 and Ferrari F355... 4 screens, controls not working....

Hi

I'm emulating F355 in Demul 0.7 (last version). The game opens 4 windows and the 4th window of demul was black but it need to be the active window for the controls to work. if you defocus it, it the game will not listen to the controls.

This is a huge problem because the other 3 screens are showing the game. Specially the center screen, which needs to be focused to play (if you want to maximize it).

Can this be solved?

Thanks