Wish I had a screen recording to pair with this, but it's been happening to me pretty consistently that I feel like it wouldn't be hard to replicate. So I'd been farming Spire of the Watcher this past week, and was using my Solar Hunter with Caliban's Hand to do it. Sometimes though, whenever I killed a Harpy with my throwing knife, it would make the sound like it was about to ignite, and then nothing would happen? The other Harpies surrounding the one I just killed wouldn't explode or get scorched or anything. When I killed other mobs with my throwing knife though, they ignited no problem. It was specifically the Harpies that wouldn't ignite. (And I'm talking about the regular Harpies here, not the Supplicants) I was also using the aspects that gave my solar ignitions bigger booms and spread scorch to other targets, so I'm not sure how I've killed a Harpy with my throwing knife only to have the Harpy next to him just float there unscathed.