Entities sometimes don't render behind the water surface on Fast or Fancy graphics

 
 
I was playing my survival and I found that I wanted to kill a fish but under the water it was visible but on the surface it was invisible and just the other way around with the zombies on the surface they were seen but in the water they only saw the part they had in Water. The fish disappeared and appeared depending on the block they were in, I hope this will be fixed soon, I do not know if it happens with other entities.
Thanks for making this wonderful game!