Stop Windows thinking there's only one monitor connected when second is turned off?

[King Mustard]

I have two monitors.

If I connect both via. HDMI-to-HDMI cables to my GTX 1080 and turn one monitor off (perhaps I'm playing a game on the left one or something), the PC makes the "hardware disconnected" sound and all the windows from that turned-off monitor move to the first one. It's extremely annoying.

I've discovered connecting the second via. a HDMI-to-DVI cable to the DVI port on the GPU fixes things but I'd prefer 2x pure HDMI connections.

Is it possible to stop the behavior described above?

 

[Bacon1]

Its a "feature". You'll see lots of threads about it and displayport sleeping and such as well.

 

[King Mustard]

Its a "feature". You'll see lots of threads about it and displayport sleeping and such as well.

I guess I'll keep mixing HDMI and DVI, then :/