Hunters are experiencing the same issue as Warlocks with the Lucent Night Universal Ornament set. Instead of the helmet, it is the gauntlets. I only saw Warlocks mentioned in the Known Issues article, so I wanted to make sure Bungie was aware of this on Hunters as well.
Hi im here to help bungie has put out a tweet to where multiple ornaments where bugged. Here is a link to that post hunters are mentioned https://mobile.twitter.com/BungieHelp/status/1359927268793982976 I hope this helps.