The Bug:

Falling anvils don't damage entities when landing on cobwebs.

When falling anvils land on slabs that have entities standing on them, the given entity receives damage so one would expect the same behavior when anvils fall on cobwebs.

Steps to Reproduce:

1. Build the setup as shown in the provided attachment. setup.png
2. Obtain an anvil and switch into survival mode.
3. Place the anvil against the diamond block so that it falls on you.
4. Wait for the anvil to fall through the cobweb.
5. Take note as to whether or not falling anvils damage entities when landing on cobwebs.

Observed Behavior:

Falling anvils don't damage entities.

Expected Behavior:

Falling anvils would damage entities.