I’m not sure if its actual bug or if it works as intended but I haven’t found any info about it.
I was fighting in war, against team with Garnet. She had a bit over 2x mana and got hit by my Hansel. Her mana went down to 2x and stopped there even tho debuff from Hansel was active. Damage from debuff was working every turn.
I’ve noticed it too late to take more screenshots.