Hey Jason!
If an event is submitted via the Community Events submission form, a site administrator can indeed then navigate to that event in the admin and create tickets for it. When doing so, there should be a red alert about the event coming from a Community submission form, like in this screenshot → https://cloudup.com/c44CaMqFjmV
But then once you actually create the tickets and save the event, all should work normally and as expected.
Let us know if this helps or if you have any other questions!
Cheers,
George