I am using Windows 8.1 Pro with 2 monitors. Most of the time, I am in "Desktop" mode. I have my open windows spread between the two monitors. Some windows in one screen and some windows in the other screen.
If I lock the screen (Win + L) and leave it locked for a short while (lets say to make a coffee), then when I unlock it, all my windows seem to come have been moved into one monitor. I again have to spread them out. Very frustrating. But if I lock and unlock immediately, then they all seem fine.
Any ideas what might be going on?