I've run into a minor issue. It used to be an issue, then when 8.0 came out, it was fixed...whether inadvertently or not, I don't know, but it came back with 8.1.
I have several monitors hooked up to my PC. My standard workflow for Studio Pro is using my two desktop monitors. The left one is for the main application and the right one is my Mixer / MIDI editing window. I run both at full screen on the right monitor. It use to be no problem. I could have the mixer up, then click the EDITING button, and the EDIT window would appear above the Console window. I'd do my edits and when done close it, then the Mixer window would be there waiting for me. NOW, if that Mixer window is up, it's "On top." I have to close the Mixer to see the EDIT window. Here's the funny thing...it's only on top for Studio Pro windows. My OS windows can go on top no problem, so it's not a "Windows Always On Top" issue. Like I said, it's a minor niggle, but it's annoying as all get out. I was so happy when this was "fixed" when 8.0 came out. Now I'm sad again. Please take a moment of silence with me to grieve.