Disconnecting while trying to go through the Lower Submerged Passage

For people having this problem (I've seena couple of others already): You can cause it to make a new instance of that area instead of trying to send you to the broken one by right-clicking on the area transition, which will bring up a window allowing you to create a new instance of the area, or select which to enter if there are multiples.

Apologies for the inconvenience, we will hopefully have this fixed up in a patch soon, but as I don't work on terrain, I can't make any firm statements myself. I hope this allows you to continue past this bug.