I’m running windows 8.1 x64, and I’ve been struggling with windows changing focus seemingly at random – some random window in the background will pop to the top and grab focus. Very annoying.
I finally traced this to the fact that vorpx was running and the ‘Restore Desktop Windows’ was selected. Deselecting it has eliminated the problem.
Not a big deal, now that I know what’s going on, but I thought other may like to know.