Wailing Arrow silence from Rae'shalare works in PVP

[Opti]

WoW Freakz item link: https://www.wow-freakz.com/item_finder.php?item=186414&&name=rae-shalare-death-s-whisper
Character name:
Bug description: Wailing Arrow Silence should not work in PVP
Proof: https://twitter.com/bicmexwow/status/1407480085398032386?lang=en
https://www.reddit.com/r/worldofpvp/comments/s044mz/does_sylvanas_legendary_bow_work_in_pvp/
https://us.forums.blizzard.com/en/wow/t/how-does-hunter-legendary-wep-work/1069192/8