User blog comment:Arcorior/Can't Swim Even Through Full Restart/@comment-28435078-20161215012318

Here is how you fix it.. Don't Save! If your game breaks. Don't save! Who knows, you could have built a whole base, but you didn't save yet and your game starts going tripppy, don't save, or it will remain broken until a fix is made. If you want to stop this falling thing like you are on land but underwater, than dont teleport straight to a biome from inside your base.