Pyg Burrowers in unlimited still don’t have any rules text for Tunneler. I’ve submitted a ticket on the warmachine app when I noticed it but it’s been a few months since Trollblood unlimited rules came out and there hasn’t been any fix yet.
“Tunneler” is definitely one of the abilities of all time.
Looking to have it in an update
We noticed that too. It was a mistake we will remove it in the next update.