Possible Ablative Armour friendly fire bug

[Kitten]

@dylanrong1997

Level 25 DR talent Ablative Armour stacks can be removed by Friendly Fire, Venting drakefire weapon, Environmental damage (Garden of Morron acid pool).
On the contrariety, Huntsman Level 25 DR talent Thick Hide has similar mechanics but does not remove by these damage sources.
Engineer DR talent should receive the same treatment as Huntsman DR talent.

This has been posted as feedback, but is potentially a bug.