Spriggan healing totems not working when fighting Elites/Bosses

(Only happening for character, minions are healing OK)

Just started noticing this, so I’m not sure when it started. I was fighting a summoned Rift Beast, dropped my usual (9) healing totems, and stood as close as I needed to get the healing and still be in Spirit Thorn range. One problem: the healing didn’t work! I switched to another Echo, ran through with no problems.

So I decided to run against another Elite, this time vs. Haruspex Orian - same issue! All of his minions allowed the healing totems to work as intended, but against him they were useless. Has anyone else experienced this?