Red Rover Allows Subs to Double Book?

Hello! Recent-time lurker, first-year sub, former para, former HS teacher, first-time poster.

Today, I mistakenly accepted a half-day job posting on Red Rover for a day in September that overlaps with a full day job I had accepted a week ago.

I'm surprised that Red Rover let me see the assignment, let alone accept it. Holding onto both jobs seems like a bad look since it blocks another sub from taking the job and causing a scramble at the inevitably jilted school. Makes me worry how commonly this is practiced among subs in districts using Red Rover.

I guess the consequence of holding onto both is that my rep would take a hit with the school up to which I don't show. Anyone had/heard of this experience? Do you know if there would be consequences at the district-level for holding onto both until the day of the assignment?