For some reason if you break blocks underwater they don't float to the surface like the water physics in the aquatic update say they should. Now, this happened on a realm so I don't know if this is a realm problem or if its a general game problem but this is fairly annoying.
Comments 2
It's likely because the water is flowing downwards where the blocks have been broken, which pushes the items down. If you have different repro steps or scenario please add more details with screenshots or a video, following the format given here.
Happened in single player and split screen too. 99% dropped blocks will not float up from Y:10 and below. Also, there were few blocks that wouldn't float up from any coordinates. There was no flowing downwards.
Did it happened anywhere in the water?