Hex is already a very potent in competitive, so much so that people will either forgo or use it in addition to shadow ball despite the fact that it’s weaker initially
Hex is best on teams with lots of status, usually toxic spikes, so you can get the double power asap, but bitter malice has a chance to inflict status on its own on top of the double damage effect
there's ONE post on the pokemon reddit(barf) that says they ran into an issue where the distortions stopped spawning in post-game until they reinstalled the game