Stone Egg hatched: Nothing!

[Zaknh]

When it hatched inside my house it didn't spawn anything, it just hatched into nothing, disappearing completely. Is it supposed to happen?

[licet_insanire]

It should not happen, it must be a bug. Do you have mods installed?
You might want to try spawning another stone egg via console commands and see if the same happens. Otherwise, if it still fails, try spawning in Ro Bin's gizzard stone