2% is so low it probably amounts to nothing after diminishing returns if stacked with other % amps like CP, passives, mundus and weaponn traits. Remove as many otther healing amps before testing it and see if the resultt is different.
hey, can you clarify what you are investigating or am I being Dumb? Are you saying that when you wear the new sets the % heal buff from other sets stop working or that the % buff does not continue with the added length of the new set?
Tooltips are not reflecting the change or is it the actual heal?