I'm not sure if it was a combination of a bad seed or mods or both but we genuinely couldn't find more. I don't have the seed as the enemies swarmed us eventually killing us all so yeah :/
A bad seed shouldn't happen. I think we've had one registered case in recent years where the morkite count in a deep dive was exactly the amount needed (so, still enough, but at a level where it was an issue), and that was an extreme edge case we fixed.
My money is on mods (but I'd still love to have a seed to check).