Water dupe

I was trying out the new snapshot and well after some time I got to do some mlg water jumps and at one time at the end of the jump the water placed on the side of a tall grass (it broke, it was on the closer block to me on the pictures) and it made a duplicate water block beneath it (which I could also pick up with an empty bucket and reuse so it was not a ghost dupe)

 

Edit: 3rd pic added because I managed to do it again (and on 4th pic the water disappeared as I tried to pick it back up)