Here are the answers to your questions.
Question 1:
Edition Windows 11 Pro
Version 23H2
Installed on 11/4/2023
OS build 22631.3737
Experience Windows Feature Experience Pack 1000.22700.1009.0
Question 2:
Fences Version 5.54
Question 3:
By one monitor with two screens I am (in my poor way) trying to say that I have one monitor, and that I have two desktop environments. I'm not sure if that's a better explanation, but one of my desktop environments has applications, folders and files broken up into several different fenced in groupings, and the other desktop environment has my games broken out into fences containing various game types (like RPG, Racing, Arcade, etc.).
So I have two separate desktop environments if you will.
Question 4:
My monitor resolution is 3840x2160. I have my monitor at a custom scaling of 148%.
Question 5:
The game in question where this occurs is Galactic Civilization I: Ultimate Edition. The game is of course very old. I originally owned the game under Steam, but I could not get the game to play properly either full screen or windowed. If I tried playing in windowed mode, the game looked like it would briefly launch in a small window that would remain open a second, then the game would stop; so at no point did the game play, it would just be a half hearted attempt at running itself. Therefore I had to try to run the Steam version full screen. When I ran the program full screen I would have the issue I originally described regarding the fences all loosing position. I was still having graphical problems playing via Steam's version, so I went ahead and bought the game under GOG Games as well to see if I'd fair any better with that version. Indeed I did. I was able to play the game, and it would launch full screen. However, when I would conclude, the issue I originally described would occur.
So most accurately, I can say I have only ever successfully run the program full screen. Regardless, whether it were the Steam version or the GOG version, when I exited the game I would have all my fences lose their positions I had placed them at.
Question 6:
I have never made a video of anything on my monitor before. I'm sure I could figure out how to if needed, but I would like to hopefully see if the details I'm giving you now can help solve the problem first.
If it turns out I will need to upload a video of what's occurring, I'm going to both have to figure out how to capture the video on my screen, followed by hopefully having an easy time uploading it on this forum space. If you need me to do that, perhaps when you reply you can give me directions on how to go about doing it.
And although you didn't ask, my general hardware specs are as follows:
CPU: Ryzen 5950X
GPU: Radion 6950XT
RAM: 128GB