Hoppers and fishing bugs

My survival minecraft hoppers somehow will not pick up items while in water. Also the fishing lines and bobbers will not show up. I use a fishing rod and nothing happens but I can still fish things up, however this makes it much harder to effectivly fish. I found out about this when I tried using my AFK fish farm and it wont work. Pkease tell me if these are real bugs or if they are new in game features.