Turtle eggs despawning

Turtle eggs that I have placed (both those placed before the update to 1.10, and those placed after the update) are despawning, seemingly at random.  They aren't being squashed.  Despawning occurs whether or not I remain nearby.  (All my turtles despawned too, though that may be a different issue.)

I used to farm turtles in this location prior to 1.10 without issues.