turtle eggs not hatching on rising

Minecraft Username:
FuriuosGeorge
Brief Description:
if you try to hatch turtle eggs they just disappear after getting to hatch=3
Instructions:
1. place egg(s)
2. Wait a tone of time
How many times did you recreate this?:
3
Result:
eggs just disappeared
Expected Result:
eggs hatch and turtles emerge
Evidence:

 

mark as closed and user is an idiot.
one of my mayors turned on the nospawn flag and I didn't notice