Necro priest heal bugged?

I’m probably very late to this party, but I want to talk about it anyway. So, it says that when you summon the skeletal priest, it buffs your other minions and HEALS them. There’s even a talent that, at max rank, causes the heal to be 60% (!) of their max health. Even with this talent maxed, when I cast the skill my minions don’t heal. Is this a bug or is it intended? Why does it say it heals them, when it doesn’t?

I heard it takes 5 seconds for the heal to trigger which, tbh, is insane to me. It might aswell not heal at all in that case. And why doesn’t it say it on the tooltip then? I mean come on, minion necro is weak enough as it is, it doesn’t get a heal either, really?

The passive skill It is either bugged or they wrote the tooltip wrong.

It really does heal all your minions for 60% (at lvl3), however it happens exactly 5 seconds after you cast the skeleton priest (so when usually the buffs run out), however you can actually spam it and get multiple consecutive heals with 5 second delay.

Now the tooltip implies either instant heal with 5 seconds CD, or HOT with 5 seconds CD, or periodic heal every 5 seconds. This makes playing with bone mages especially frustrating.