Referencing this post on Reddit: https://www.reddit.com/r/DestinyTheGame/comments/1mmraey/comment/n86401n/?context=3
Since the launch of The Edge of Fate, Barricade has felt significantly less effective than it was during Heresy. Splash damage felt worse, enemies were significantly less inclined to respect Barricade Taunt. I polled some other Titans in my Clan, and they agreed that they'd sensed the same thing. But there were no patch notes regarding it, and it's hard to make a bug report with accompanying video based on such a feeling.
Reading that Ward of Dawn and Well of Radiance are affected by a bug where they're trying to scale parts of their effect from a no-longer-present Resilience stat, I'm wondering if something similar is the case with Barricade. It would certainly explain my (subjective) observation.
Could the Sandbox team take a look please? Thanks!
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https://thegamepost.com/unintentional-oversight-bungie-titan-warlock-supers-bugged-destiny-2/ This confirms there is a major glitch, and Bungie is working on patching it.