Thanks for reporting.
Frankly, I have now idea whats causing this (yet). And at the moment I am dealing with some private matters, so I don't have the head right now to go for a deep dive here.
What I do know is this:
- The water pumpjack works fine on its own
- This problem didn't seem to exist with v0.1.1 of the Fulgoran enemies mod, so I assume it was introduced with v0.1.2 of that mod
My recommendation for the moment is to rollback to Fulgoran enemies v0.1.1, if possible.
It might take a while before I can look into this more thoroughly, sorry ...