Trap does not damage explosive barrel

[TurningLeaf]

Bug(?): fire and electric traps don't damage an explosive barrel sitting right on top of it.

==========

1) set down explosive barrel
2) put a fire or electric trap underneath
3) have mob or friend activate trap
4) observe undamaged explosive barrel still remaining
----------------------------
Expected result was trap--> barrel chain and it was gonna be awesome.
-----------------------

Still have to attack barrel with fire/electric to set off.
----------------
Server: Surface