Minecolonies version

universal-1.10.2-0.4.1033

Expected behavior

I think the Miner should be mining everything and returning it to the chest.

Actual behaviour

Miner seems to keep the important things (iron), but seems to be voiding cobble (and possible other items). Occasionally sends out message requesting more cobble to patch holes.

Steps to reproduce the problem

Not sure if this is intentional or not, but it seems to happen with any miner I hire.

The miner has to use cobble to patch holes. I think you answered yourself where all the cobble goes ;)