Hello all... Not a mac user except just this week at work I guess I have a mac now, so I'm having a bit of a rough time moving over from Linux 100% of the time to this. I'm running Yosemite & whenever I open up a different app, some preference window or even just select a different app on my other monitor, for some reason the main window on the other monitor will just disappear. looks like it slides off to the side... Is there any way I can stop this?? Really aggravating & I can't seem to figure out why its doing this. Any help is appreciated thanks.