Something similar happened to me on SoT, I was about to go to bed but before i wanted to do 2 or 3 runs, first run got the tier 4 boon book, second run i got the same book and an artifact from the same chest, 3rd run i got a dragon gem and the same artifact, the one you summon a vendor, and fourth run i got the book again,…
Is there an actual chest bug? Did the confirm it? My last 55 runs I had nothing drop from chest except the scroll, the money and the level 4 enchant, Im going crazy...