It wouldn’t be a new feature without it being broken but I spent the time to farm the shards and it won’t let me upgrade 6/6 mythic Gaze trinket. Why must everything be such a chore now? Like any new feature you should be excited about you have to brace for impact for how many things will be wrong with it. Playing a video game should not need a PHD and mmo champion or wowhead open on a second monitor the whole time.
EDIT: closing down game and restarting worked.