Visit Pelagos, an insular planet of coconuts. Use calciners to refine resources, and unlock cargo ships as the perfect way to connect its scattered shores
Bots can't grab all of the stone/titanium from coral at once, so some is left behind. It can't drop onto the deep sea, so it tries to find nearby land to drop to. If none is nearby, then the resources are voided.
I dunno how you'd fix this to be honest, but now you know!
