Dexie
Steampunker
This is kind of a short one, but if your mouse cursor is over a wall and the hook extends fully and hits no tiles, the hook should grab onto the wall. If you don't know what I mean, it's similar to how Plantera moves around in the jungle. In this same way, if there are no walls, the hook just comes back to you like it does in 1.3. I drew a (pretty bad) MS Paint example if you want to see it visually.