So my Fireteam member and I were doing the Ascendant (Descendant) Challenge. I fell on one of the last meteors, but he managed to get to the end. He had no choice but to kill the wizards, whilst I made my way back down. The chest spawned, when I just got to the meteors, and since I was about 20 seconds away from getting to the chest, he waited for me to open it, but it despawned. It’s no longer spawning. We can’t complete the Challenge quests for Petra. Any help, Bungie? pls