Earlier quoted context omitted.
...that seems like a really good and intuitive feature. What would expect it to do instead? Close the window? Keep it on some invisible virtual desktop? (how large is the mysterious off-screen area in which windows can be lost?)
My laptop has a 15" 1080p panel. It's attached to 2x 32" 4K panels. When I'm done for the day, I turn the screens off. When I come back the next day, all my windows are on the laptop onboard display, and if I'm lucky, resized in a way that makes them movable. If I'm unlucky, I need to close the application, re-open it, and hope it's back in a helpful way. The 2x 4K panels show me my wallpaper every morning. They don'…
I don't know how you expect that machine to know that you're only disabling that monitor temporarily and you expect it to restore your windows at some future time when it reconnects.
If you plug in a new monitor, should windows jump onto it spontaneously?