When placing an armor_stand in the world with the required item, it destroys any liquid that is in its way.
MC-125669
Armor stands can be placed in liquids
Resolved
Fixed
1
Confirmed
Minecraft 18w07c, Minecraft 18w09a, Minecraft 18w10b
Minecraft 18w16a
Retrieved
Cannot reproduce in 18w16a, probably fixed earlier than this due to water physics changes.