There is a new bug that you can cause both on purpose and by mistake, if you place a dispenser in front of a tile and you stand on the tile, bend down and pour water while looking at the dispenser, it will bug.
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duplicates 1
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Forget about the objects, it just got stuck xD, it just pushes the player in the direction they come out of the water block
This issue is being tracked at MCPE-178348.
I also found that it can be used to move other things almost instantly.