Minecolonies version

version X.X.XXXX or curse 0.6.6

Expected behavior

• Miner will mine past level 31

Actual behaviour

• Miner stops mining

Steps to reproduce the problem

1. noticed fences embedded in the level he was trying to mine
2. removed fences, no go
3. mined myself down and found railtracks two levels down, removed them
4. miner began filling the space with cobble and began mining again