Mobs take fall damage in 1 block deep water.

Steps to Reproduce:

• Let a mob fall into 1 block deep water. If it's flowing or still standing water doesn't matter. 
• observe

Observed Results:

• The mob takes the fall damage instead of canceling it due to the water. 

Expected Results:

• The mob should have gotten no fall damage.      

Notes:

• I encountered the bug while using my mob farm and I was wondering why they kept dying.
• The player also gets an interesting result when falling into 1 block deep water: The player doesn't make a splash sound and instead you get the hard fall damage sound but you get no fall damage.