Is Rice to the Challenge working as intended?

So I wend to RWZ to se how well RttC worked. Brought up the combat stats window where I could see my regain, and found a group of Malta that conned green to me.
After I got the 6 of them to attack me, I just stood still and did nothing.
3 of them were up close, but still mostly using range weapons. 3 stayed further back. Yet the buff icons under my health bars showed a 5 over the RttC icon. And just to confuse the issue even more, the regain from RttC showed as 1.48% for most of the time, jumping to 2.11% for a faction of a second, with very irregular intervals.

So does RttC work as descried adding regain for each enemy in melee range, or is it only adding regain while an enemy makes melee attacks on you?

Also I could swear that at times, like under a Rikti raid, the number over the RttC icon have jumped as high as 21.

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/joking
Probably has something to do with the rice you're throwing around... I for one wouldn't want to fight rice, it's pointy and gets in everywhere!
/joking

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Rabbits & Hares:Blue (Mind/Emp Controller)Maroon (Rad/Thermal Corruptor)and one of each AT all at 50
MA Arcs: Apples of Contention - 3184; Zen & Relaxation - 35392; Tears of Leviathan - 121733 | All posts are rated "R" for "R-r-rrrrr, baby!"|Now, and this is very important... do you want a hug? COH Faces @Blue Rabbit

I've found that if you always rice to the challenge, it can often escalate into a pilau fight...

<g,d&r>

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Darn that spell checker... when will they invent one that can read minds so it can see what I mean, rather then just checking that the word exists!!!

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I'd say its alright in terms of what it does for a fraction of a second. The duration of each tick is greater than the time between ticks.

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He will honor his words; he will definitely carry out his actions. What he promises he will fulfill. He does not care about his bodily self, putting his life and death aside to come forward for another's troubled besiegement. He does not boast about his ability, or shamelessly extol his own virtues. - Sima Qian.