I too have this happening to me when I leave my Feral Heart game on for a very long period of time.
Its just your computer derping on you really. Like I use a laptop on my computer and when I've been on it for a long period of time, a little window does pop up and says something about Debugging. Just try to restart your computer and log back in Feral Heart.
Its not a Feral Heart matter that this is, because chances are that the "Debugging pop up will just pop up and be there when you open your internet.