Just as the topic says, from my first Season 1.3 dungeon battle:
From my second dungeon battle chest:
From another dungeon chest:
And another:
I restarted twice in between these drops. The dungeon symbol on the chest is for the Flametree dungeon.
@Kafka @Jeto @OminousGMan Hopefully this can be fixed promptly.
Same here. We demand a swift hotfix to solve this problem.
Hey,
Been following this issue since another thread about a similar issue popped up, but we have found the problem specifically affecting the 1.3 Season rewards and chests and will have a fix for this out soon!
Jeto - Support Human 
Thanks for the info and protecting us from “more anger against the game” after opening first 1.3 chests 
EDIT: @Sibelios I got this from my dungeon fight:
