I have found using word on multiple desktops confuses the mac. It used to do it in 10.7 too, and it's still doing it in 10.9 Has anyone else come across this? it's very annoying when you have the keep switching desktops because OSX has decided I need to look at the desktop where Word was first opened. Word seems to be the worst, maybe as I only seem to use that on multiple desktops at the same time. I've also found similar screen to the left of the first desktop (can't remember the name - with the widgets). It'll also jump to another desktop as soon as I click something on that screen. Is it a known issue?