This one has started to occur recently, it's an intermittent bug that seems to persist for the entire session you are logged in.
Sending a geologist out on a stone search, and he appears to sneak back without reporting.
There is no popup saying whether he found stone or not and no messages about him in News tab.
Annoying, because you end up having to check manually for exhausted stone deps, or waste time sending him back out.
Only seems to affect stone searches as far as I can see.
Please keep your posts pegi-7 appropriate, thank you.