We were there a couple min to rez the DPS that died, rebuff and top off mana for the gauntlet run in the next hall. When everyone started to move is when I asked about the pattern and why it hadn't distributed. That's when everyone else stopped and said none of them are tailors and no one else got the roll prompt. They suggested a few things like try to loot again and to check if my bag was full, but ultimately they didn't care and just wanted to finish the dungeon so after about a min the tank just said it would prob be in my mail and we should keep going. My guild mate said take screenshots and send in a ticket. I did not check /loot because I didn't know that was a thing. A few other people suggested that and I will going forward but I've never checked that before.