Mass Effect Andromeda - I'm not Commander Shepard and this is my favorite sequel

Is it just me or does the vanguard siphoning strikes profile passive not work? I’ve tried it multiple times now in semi controlled settings and it does not seem to regenerate any shields. I suspect it might regenerate health instead of shields, unless something else is making my melee attacks (which are a pain to use because they take so long) to do that.

Also am i the only one who noticed that ability balance is absolute shit? It seems like a single shotgun shot does as much damage as most abilities that have 10 second cooldowns. That makes no sense.