Brief Description:
Ghost water block is created if you both sneak and right click above an interactable block.
Steps to Reproduce:
Place an interactable block (e.g., crafting table ).
Stand on the block.
Get a water bucket and right click the block while sneaking.
Return to the ground and break the block you have put in step 1.
What you see: Water suspends.
What it should be: Water should be flowing.
Note: Lava is normal, unlike water.
I tried to search for duplicate, but failed to find it.