What I think is happening is that, when going from one server to the other, the game is dumping you right on transition. And the markers are set so that if you even walk on them/brush them with your toe hairs you'll transition. Is there a way to set the transition markers to be mouse-click only?
*Edit* - Also, I watched a few others log off a medium distance away from the server-transition, but when they logged back on it seemed to shuffle them back beside/on the transition, causing them to go into the loop.