Input bug?

So im using unreal and have been doing so for some time now, all of a sudden when i mouse over (not press) a button under almost any menu in the editor it for some reason makes my screen switch input to the same input.

So as an example i had was using DVI

  1. mouse over the button
  2. my screen goes to black
  3. my screen has now switched input to DVI again

Now i would record it but for some reason it does not record it happening
I tried switching my DVI cable out to a HDMI i did this yestoday and the problem dissapeared for the remainder of the day although now when i have started unreal again it has the same issue but just with HDMI.
PS. this bug ONLY happens in ue4 editor.