White magneto persistent charge bug

My team was
4 star white magneto
5 star x23
5 star cyclops
4 star killmonger
4 star wolverine

Below 10 persistent charges white magneto generates prowess (basic attacks have 5% chance to generate prowess per persistent charge) but at 10 charges he doesn't generate any prowess through basic attacks. This shouldn't happen.
Sign In or Register to comment.