Anyone else seeing this on Mac or is it just my machine...
Mac Book Pro
If I use a USB 3 hub (in my case a Kensington model) to get usb, keyboard, and 2x HMDI monitors connected whenever I launch MA3 OnPC any windows dragged onto those external monitors don't draw. They either start blank white or black, or if they were already displaying something on the internal screen before dragging they stay frozen on that image.
No other application has issues.