In the D8 version I see code for the Colorbox integration, but I don't see anything that causes the options form to be displayed. Is this code "Work In Progress"? If so, any tips on what is needed to get this working? I might be able to contribute with some guidance.
Or, if I'm doing something wrong, let me know.
Closed: outdated
1.0
FullCalendar Options
Not all content is available!
It's likely this issue predates Contrib.social: some issue and comment data are missing.
I've volunteered to help clean up the FullCalendar issue queue. As part of that effort I'm closing issues open for unsupported versions of the module as "Closed (outdated)".
If this issue is still relevant for version 3.x of FullCalendar, then feel free to re-open it and update the issue version number.