Mercenary heroic weapon quests bug, the game screen becomes blurry

Everytime you complete the heroic bounty to unlock the weapons, after completion and the game shows which hero have completed their weapon quest, the game becomes blurry.
Go back in into other screens or whatever you do, the blurry do not go away. I need to restart the game after each of those fights. It’s like the game graphic stops changing screen and are stuck in the blurry thing happening when a screen fade out.
It makes this mode a hell to play since you need to restart the game after every fight.