As the title says, it appears the pack pony won't harvest from the one type of node, coalesced stone cluster. Perhaps a leftover issue from when the pony refused to harvest in BoL. You do get the message, "Your Pack Pony has found a bonus harvest from coalesced stone cluster" However you get no message as to what was actually harvested and it picks up nothing. This appears to only affect coalesced stone cluster in BoL, I haven't tested other stone nodes in other tiers yet.
Yeah, please fix the poor pony. It's still not harvesting everything it should from Plane of Magic, either.
Tested on 12/2. Confirmed BUG. BoL pony does NOT harvest from coalesced stone cluster. The pony says "Your Pack Pony has found a bonus harvest from a coalesced stone cluster" in chat, but nothing appears in the bag. PoM pony harvests from all nodes. Pony will harvest hide and mushrooms from the lair/nursery, but does not appear to return greatmole meat or rock fern from these specific nodes.
Just checked it in Shadeweaver's Thicket and it seems ok for me. 2 luclizite clusters reported and gained.
Tested 2/7 in Luclin, where this bug was occurring. Confirmed FIXED. Glad to see bugs being quashed, in spite of few likes. Gives me hope for my quest bug report that got no likes at all.