Howdy, here to report a really odd occurrence. I don't know how but one of the princesses gave birth to a different princess species. She was also due for two children, and ended up only having one. It's a real head scratcher that is for sure.
That used to happen with pregnancies being delivered in the Campsite in versions prior of v0.16.6
If it happened again, unless you're talking about eggs, but that doesn't seem the case, let me know!
