put a burnable item into a burner pylon and breaking it results into 2 of that item droping when the pylon is broken.. if u put a non burnable item in the pylon and break it only the pylon drops deleting the item... this may have something to do with SPongeforge
silent libs 2.2.6
Silents Gems 2.4.3

Not having any issues myself, must be Spongeforge.