Application window BentleyMap always opens on same screen


We currently have a problem with BentleyMap V8i (SS4). When working with several screens, the application window of BentleyMap always opens on the same screen even when the window was on another screen when closing BentleyMap. In other words, the location of the window isn't saved on exit.
This seems to occur with some of our colleagues and apparently only on Windows 10. Location toolbars (docked and floating) seem to be saved correctly, problem is purely the application window.

There are no reading/writing problems with the upf. Save settings on exit is ON.

Thanks in advance for any help.