I have never heard of this before and cannot give any explanation to whats happening sorry But what i do have to offer is an idea that may work to resolve this issue. What you can try doing is next time this occurs, try spinning around really really fast, or if that doesn't work, try diving under the earth. The point of my idea is to get to a completely different dream/dreamscape, kind of like a reset button just an idea id like to throw out there if nothing else works. Good luck!