I’m using PC (Steam) and playing with a combination of console and keyboard.
Reproduction steps: Interacting with fast travel (from anywhere on the map) and selecting the underwater farm.
Everywhere else (both on land and underwater) works fine so I think the bug is just for when traveling to the underwater farm.
I think the bug occurred when i was fast traveling between the underwater kingdom and home repeatedly with console (I was trying to decorate the farm and was going back and forth) and i pressed on the underwater kingdom warp about 2-3 times mistakenly instead of my farm, and then the bug occurred and I couldn’t travel to the farm anymore even though it was fine before that.