Minecraft Version

1.16.4

Forge Version

forge-35.1.37

Mod Version

modular-routers-1.16.4-7.3.1-50

Describe your problem, including steps to reproduce it

I palced a modular router with a breaker upgrade (iron pick), placed an anvil in front of it.
The router broke the anvil, but no item dropped.
A breaker module with a diamond pick produced the same result.

Any other comments?

This happened in Enigmatica 6 - E6.

After some more testing, I found that every block breaker has the same effect, not just yours. Sorry for jumping to conclusions before actually doing some actual testing :D

I think this is possibly due to some other mod in the E6 pack messing with anvil-breaking in general. In my test world, I found the router picked up the anvil as an item, as expected.