Weird waypoint bug

I was in the Malformation Map, and when I came back to my hideout, there was a large structure over my waypoint. It *was* the waypoint, since I could not edit it and when I moused over any part of the structure, it highlighted the waypoint.

Exiting to character selection did not remove the structure, but shutting down PoE and restarting the game did.

The structure looked like part of a large stone ruin.