Mouse not re-apperaing

So I followed this tutorial (UE4 Tutorial - RTS Style Camera Movement With Edge Scrolling) and it all works but the problem I am facing is that when I rotate the camera using the Right mouse button it hides/consumes the mouse and when I release the Right mouse button it does not re-appear and I don’t know how to make it re-appear.
I have tried setting show mouse cursor to True but it still doesn’t work, my blueprints are exactly like the ones on the Link.

bump bump.