my rats have mined 3-4 levels down and are now no longer able to find their way back to the quarry to deposit the blocks, and just run around in circles at the bottom of the hole, occasionally injuring each other
(started with one rat only, added 2 more when first got stuck, same result)

playing DW20 version 1.16-1.7.0
rats version 7.1.1
minecraft 1.16.5
forge 36.0.45

Same issue here, the rat is stuck going back and fourth and when given flying upgrade it just cannot mine blocks

Fixed in 5e55839