To replicate:

1. Take a bucket of water, and try to pour it out against a double slab (any type).
2. The water appears for a split second, then disappears.
3. The water bucket appears empty, but when trying to place it a second time it pours out (unless you try using the double slab again).
4. If you try to pour out the bucket against a double slab more than once you lose the water.