Water seems to overlap hearts.
Tested in: Survival Singleplayer, Survival Multiplayer, Creative Singleplayer, Creative Multiplayer.
Seems to be a rendering problem?
How to recreate: Get a bunch of cows, Look towards the sea / a river or something with water, Give them wheat (making hearts appear) and the water will go over the hearts (making half of them blue)
Duplicate of MC-9553, please use the search function to see if your bug has already been submitted. Currently over 52% of tickets are being closed as duplicate.