Setup:
Place a hollow 3x3 of any material in a horizontal fashion, I used stone.
Place a soul sand underneath the gap.
Place a dispenser which dispenses water on one of the sides pointing into the gap, instead of a block.
Dispense the water, retract it, and place any mob (I used Armor Stands and Chickens.
What this water can do:
Turn into stone, cobblestone, or Obsidian when touching lava. (Cobblestone and Obsidian are impossible, see below.)
Generate particles and sounds idly or if entities are in it, including the player.
What this water cannot do
Flow, this will break the glitch.
Be seen.
Affect movement like water.
Drown you or other entities
Get pushed up by the soul sand underneath but this will create particles.
Be bucketed.
Imgur Video: http://imgur.com/a/2jCF9Dp
Thank you for your report!
We're actually already tracking this issue at MCPE-56462, so I will resolve and link this ticket as a duplicate.
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