A player reported a bug in which a Pixelmon anvil placed in a claim that the player did not have permissions to could generate infinite iron bases. He placed an iron ingot into the anvil and began flattening it with a hammer several stages. He then attempted to break the anvil, but could not due to the claim permissions. Each time the anvil was attempted to be smashed, it would drop an iron base as an item to pickup, leading to an infinite number of iron bases generated. The claim plugin being used is RedProtect for Sponge. I am unsure if this can be fixed from the Pixelmon end since it is related to the claim plugin, but I am reporting it here in case it can be.

This definitely is something that should be reported to RedProtect - Pixelmon does not in any way block player interact events when using the anvil. This should go on the SpongeForums.