Endgame map checkpoint inside unwalkable terrain (Steaming Springs)

This checkpoint spawned inside a platform that I cannot enter, but close enough that I can activate it at the edge of walkable terrain.

From the overlay map, apparently it is not unwalkable terrain, as it doesn't have the borders that surround unwalkable terrain, but it is closed off from access:



For science, I tried teleporting to this checkpoint from another checkpoint. The screenshot for some reason failed to show the terrain, but the in-game display is perfectly fine. I found myself right next to this checkpoint, but cannot move, perhaps due to the whole platform being completely conjested by obstacles:



I cannot move but I can open a portal back to town and enter the portal: