easter egg?

Eeeeeeh? You may or may not have a corrupt blueprint. What are you blueprinting?

@Landrash that is part of it, but not the whole thing

a beta base. I can send you it if you want. creative

I still do not get how the fluid part of the builder works

maybe it's different states of flowing water it recorded?

Based on inventory and blueprint contense I would guess a mobspawner?

btw, This is not the whole blueprint. It already built most of it