The beetas in my colony have been delivering uranium ore to their hives just fine for hundreds of cycles. This evening (April 9th) all of my beetas stopped delivering to their hives and they all starved to death. A mass extinction event basically. I don't know if I've encountered a bug or if there's some hidden condition that's not tool-tipped that I've run afoul of, but it's rather frustrating. It does seem like the beetas are 'delivering' uranium ore to random points on the ground so maybe that's why they aren't delivering to their hives.
I'm totally willing to provide my save file if that will help.
I'm not aware of any reproduction steps other than just playing the game.