As of the title, if you break any type of tender, your client will be crashed.
To re-produce:

1. Create new world.
2. Give your own any type of tender.
3. Place tender, then break it.
4. Crash.
   (P/S: if you re-open this crashed world, you will be able to break them.)
   https://github.com/ccgfok/as/blob/master/crash-2016-12-04_15.30.14-client.txt

It's already fixed in the next release.