It appears the large stone path is bugged. I placed it in a 'L' shape and then around to the water tank and despite having enough stone it has the 'need materials effect' and even if i exit out the drone and manually click 'depoisit materials' it doesnt work. If I go into the drone to delete it, only half the stone path is deleted and the other bit is still wanting materials or disappear when sleeping or exiting the game.

(not a bug but mini suggestion, can you make it an option to have the paths without the gap inbetween sections? like a continous line)

Also cat water bowl and food bowl has the description 'needs desc'