(Co-Op) Fear mutation effect on Brutal +1 doesnt end

Good day, i just had a massive bug on a brutal +1 game where the mutation pack was Randome Nukes + Fear on damage received. i was playing stetmann. The issue is that for some reason Gary/Super Gary by the moment of getting affected by the Fear this never stopped. Even when the enemy was no longer atacking gary/super gary. time was passing by and even after 3-5 mins of non taking damage on gary the fear was not stopping. my parter had to kill my gary to be revived out of fear but then once again once he was affected again, he was going under infinite fear. i have the game replay to show it to you guys. please help since is a massive issue.

https://us.forums.blizzard.com/en/sc2/t/coop-fear-mutator-bug-with-heroic-units/14224

This is happening with every hero it seems, unfortunately. It appears to be a mistake in the code/game files.