Leaves are waterlogged

I was in my survival world and I was filling up my map, I got on the treetops and started to Parkour on top of the forest because I didn't want to be slower on land, I hit a tall peak and jumped off it to land on some trees, I tried to mlg water bucket but the leaf got blocked, I know this is a old bug or feature but this is not in java so I would call it a parity issue or a bug.