Before this season, I had no issues with sunbracers activating when getting melee kills. I prefer to use celestial fire since it has a much more significant range and is more likely to proc the grenade effect. But starting this season, it seems to be inconsistent at best, single target kills with celestial fire does not activate them. It's significantly limiting the warlock grenade frenzy fantasy that Solar 3.0 introduced. I know I've seen this as a topic before, but I didn't see the issue listed in the known issues list and I can confirm that it is still an issue as of yesterday.