I can't tell if I'm missing something simple, or if there's indeed a bug with setting Confluence Team Calendar events on repeat.
I would like to have events repeat monthly, as in once a month.
But whenever I select repeat monthly, the event repeats weekly.

And if I try to edit the original event, I get this message that prevents me from editing the time frame of the repetition.

However, if I set the repeating to weekly, it works as expected, and I can even modify the setting to every 4 weeks (which is a work around for the monthly repeat).
Here's a quick Gif of the whole experience

What's going on with the monthly repeat feature or Team calendars?