Game masters have told me to submit a bug report here. Completed all pinnacle caches and every available world cache for the past two weeks on Kenz-Frostmourne .
Am no longer gaining sparks. Currently missing two halves.
Good luck, this has been going on for weeks and we still don’t have an official response from blizzard about it and are just being told to post here. It’s not looking like this is going to be getting resolved anytime soon.
Some people have said the weekly PvP quest is granting them their missing spark(s), I however had no such luck so it seems to be hit or miss. We REALLY NEED A BLUE POST ABOUT THIS, and a Megathread as more and more threads keep popping up about this issue with zero resolutions in sight.