Now this is a weird bug. In 780 with my 2.10 quest, Link to the Heavens, you have to push against a non-water tile in order to exit the water. In other words, let's say you want to exit water. You can't just swim out of it, though; you have to continuously swim against the non-water tile. This non-water tile is actually acting like a solid combo. Eventually, after about a second, the "solidity" will go away and you can swim out.
Very weird. Should be easy to reproduce.