I am trying multiplicity, planning to upgrade from just Fences to Object Desktop. I have set it up seamless mode on my two machines and it will switch between them and I can control things. However, when the mouse moves behinds the taskbar or overlays like pop-up menus, elevated privilege pop-ups, etc. the cursor appears behind them. It will still have the mouse over effect and I can click on the things that it is behind...but on large panels like the system tray pop-up I can't always tell where I am.
I am running Windows 11 on both machines, the secondary being a fresh install. They are both fully updated.