There seems to be an issue with this dragon where you don't always get credit for killing it. I've had this happen several times now.
1. If you die during the encounter and are running back (which is quite a run as you don't spawn near the area but WAY across the map).
2. If you get knocked back out of the range of the Encounter Area as he's killed (happens less often but pretty easy for a ranged character to have happen).
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