Essence Trader Falling Through Map

Playing in the offline mode. I created a portal to a Swamp Provisioner realm, with the focus of obtaining the schematics sold by the trader within. Every time I approach the location on the map, I see the traders name/title, and then the proceed to fall through the map. I am unable to reach them before this occurs. Making it impossible to trade.

I have tried closing and reopening a portal, closing and reopening the game, but nothing seems to work.