Mad King's Labyrinth bugged chest
Yes, it’s bugged. I got loot from it yesterday but today I killed the boss twice and got nothing from the chest, even, just as with the op, I got a gold medal for participating
I am having this same problem
I believe they did change it with the patch yesterday to only be able to loot it once daily. That means it won’t reset till the daily stuff resets at 8 pm EST.
So if you did it last night. You won’t be able to get a chest again all day today till that time.
The chests are on 24 hour cool downs, well that’s what the Halloween section says— because of exploiters