It's getting pretty annoying, I lock my screen then when I come back and unlock all my windows have been moved to a single monitor instead of staying where they were. I don't recall Windows ever behaving this way before 10. Any idea how to get them to stay where they are? For what it's worth, it's a 13" Retina MBP.
EDIT:
One is connected via HDMI, the other is connected via the mini-displayport(thunderbolt)-to HDMI adapter. When I lock the screen (not closing laptop at all) all the windows end up on the screen that is connected via the HDMI port/cable, which is also the one set as the 'main display' in Windows.
