1..12..23..35..46..57..69..80..91..103..114..126.. 137..148..160..171..182..194
11-11-12-11-11-12-11-11-12-11-12-11-11-12-11-11-12
Exactly 20 second intervals still, but looks like we gain just over 11.33 per now

I do remember when it was 5% of your total health, was nice to break into the next 20th hp level to gain that extra hp/20 sec, but no longer it seems.
Perhaps the mob regeneration rate was also nerfed
