I was just coming in here to ask this also. Only workaround I've found is to back all the way our of the event and then continue the event.
Super annoying. There is basically no value to event mode other than it assigning performance bonuses to the fights and being able to quickly play them in succession.
This glitch basically eliminates any useful functionality for a mode that could be really fun and immersive if the devs gave it some love.
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