For my purposes just having a simple interface to show all incoming heals is fine. For those people who prefer a VisualHeal style display with time relevent information, they are going to be disappointed.
The visualheal case is niche, but it's mostly irrelevant, since the majority of LHC users are unit frames. Personally I'll be moving SUF to it, and I'm guessing most of the other UFs will be too, which would make any CC version of the library useless.
Ack. I'm not sure, I don't want to double the amount of comms it sends per Chain Heal if they have 4 piece. It could be done client side, but that adds more checking on the clients end for a relatively unique healing mechanic. Although, it would mean being able to track Glyph of Prayer of Healing too if it was client side.
Rather farfetched idea, but if you were using an older version somehow and another addon leaked "stacks" it could cause it. Try the latest, If you see LibHealComm-4.0-59 and still get the error, then let me know.
Also do you use any addons that modify the auras, not just a buff bar, but modifies how they sort or something along those lines?
Mainly if Divine Plea while healing is reducing heals you cast by 50%, and if Avenging Wrath is increasing heals you cast by 20%. Really all I need to know is "They go up or down" not that it's exactly 20%/50%.