(This is being reposted here since this is the correct forum for it)
So first let me say this is most likely not a bug, and you can go try it now. I've caught the Algaefin Rockfish, Deepsea Sagefish and ALOT of Murglesnout, with 2 catches so far of 2-3 volatile water. Where? Go to the river that separates Wetlands from Arathi Highlands, use a form of water-walking and head along the mountain coast of Wetlands, stay on the Arathi Side (if you get too close to Twilight you will get No Man's Land and port'd into wetlands).
Then, once you're just North of Twilight Highlands (when you go alittle south on the river you get the No Man's Land debuff, immediately turn around and you might avoid the port) cast into the water. You won't bridge the zone but your fishing bobber can. You can only, that I've found, catch the open water coastal fish. I have not found a way to get the new inland fish yet.