I've experienced this issue myself but wasn't able to pinpoint what exactly the bug is, so I am reposting [url=https://www.reddit.com/r/DestinyTheGame/comments/1u3j38s/mantle_of_battle_harmony_is_bugged_when_used_with/]this reddit post[/url] to get Bungie's attention: [quote]Bungie added a new effect to this exotic where sustained damage while your super is full gives you a 4x weapon surge buff to a weapon matching the element of your super. However with solar supers equipped specifically this effect is not currently working. All other effects seem to be working as intended including the also new effect of super regen on sustained damage, the linked video shows what everything i am referring to. (Look for buffs; weapon boost x4, energy siphon, and harmonic munitions in the bottom left.) If you could also make it to where sustained dmg while in SoF super gives weapon boost x4 I'll never take this exotic off pls fix thx bungie 😄[/quote]