maven bug report (bug report ref number 3957915756)

my bug report ref number is 3957915756
just met a weird bug during maven fight
somehow the maven stays in the middle of the areana and everytime maven flashes to a different location, she would flash back and got pinned in the middle of the areana.
i dont think the maven did damage to me during this stage but i can still do damage to the maven and go to the next stage.
the skill of the big brain and maven are invisible, without any change of the visual effect,just from the action i know they are trying to do damage but actually nothing happens.
the last stage is still the same issue, maven would flash back in the middle, the other system goes well then.the brain still fires laser and summons different bosses during both stage.
sorry i was too focused to do a snapshot or record. tried my best to describe the issue which i'm sure it's a bug i met.