Since the release of Beyond Light, the exotic Titan gauntlets "Ashen Wake" have not been properly triggering 100% of the time on kills. Roughly 25-50% of the time, no grenade energy will be refunded on a kill- this issue remains consistent during both PVE and Crucible matches. For an idea of what is supposed to happen, each red bar enemy killed with a solar fusion grenade is supposed to refund 25% of grenade energy; yellow bars refund 50-100%, depending on who they are. Guardians in Crucible are supposed to refund 100% of energy on final blow with a fusion grenade, unless your own character is killed before/during the fusion kill. Unfortunately, these energy refunds simply don't happen a large amount of the time. If you've also run into this issue recently please weigh in! I believe it's very similar to the recent bug that Dunemarchers experienced.