Stone Egg can be brought out of Hamlet world via Skyworthy. It doesn't drop when using Skyworthy.
Steps to Reproduce
Spawn Stone Egg and Skyworthy in Hamlet woeld, then activate Skyworthy.
Spawn Stone Egg and Skyworthy in Hamlet woeld, then activate Skyworthy.
A developer has marked this issue as fixed. This means that the issue has been addressed in the current development build and will likely be in the next update.