There is a problem with one of the newly added legendary inherits to the game. “The Potboiler (Pants): Knife Trap now places more durable traps that trigger when you take damage.” feature must be created. But this feature does not work in battleground and vault matches.
I have attached the video link explaining the problem. (add the letter h to the beginning)
ttps://clipchamp.com/watch/vEfpG8dKfKe
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I’ve posted this issue on reddit as well, these pants are MEANT to be used in PvP so imagine the great reactions we had when trying them out 
I’m still waiting for an answer too. The description of the pants does not contain an expression such as in pvp cannot be used.
This is a defect that isn’t going away until it’s actually acknowledged/addressed, Blizzard has been silent on this…
Still no answer. Have you received any feedback regarding this issue?
Nothing 
I don’t want to test it because it renders me almost useless in vault or BGs