A general question about Windows behavior and AOT

[regener8ed]

Anyone ever notice when using another machine like a VM or TS session in fullscreen that it makes Always On Top behave weird? (And this is not just limited to Xion -- I notice it in all programs that use AOT, including the Taskbar) I suppose what's really weird is that it doesn't seem predictable -- sometimes it works, sometimes it doesn't. Even when it's on a separate monitor, it still affects the AOT on other screens.
Just curious what exactly it is that is controlling this behavior.