Well, I just had the weirdest experience with AU. I flew into a low orbit (100 km altitude) from Nellis AFB, over Cape Canaveral and continued on. When I was over the Atlantic ocean, a black spot appeared on my screen. First, I thought it was something on the surface of my monitor, but it turns out it was AU... except... it wasn't stationary. It kept moving, almost as if I was seeing it through the Earth. Given where I first noticed it, I should have passed it long ago, but it just kept moving along the surface of the Earth. As my orbit let me past it, it suddenly slid far higher north than "where it should have been". I tried switching focus to see what's going on with the base, but it looked alright to me.
I've attached a screenshot, but not sure it's gonna help much. You'll just have to reproduce the flight and see if you get the same weird effect.