Public events not visible to public

I use events manager to publish events for my community. Some events are very similar, so I duplicate an event to create a new one. I found that such newly created events are not visible to the public (need to be logged in to see it in the list).

I can make the event visible, by changing it to ‘private’, publish, then change back to ‘public’. While this workaround solves the issue, it is cumbersome to have to do it every time.

This looks like a bug to me. How can I fix it, or contribute to get it fixed ?