Embedded Nabble doesn't work in some circonstances
HI, please see this bug
shows a security alert and prevent to load the embedded Nabble.
Updated by Christian Lohmaier about 7 years ago
despite the many duplicates, this is not fixable by our end.
nabble just doesn't support https, so when your browser's security policy prevents loading http content when viewing the surrounding page via https, you need to add an exception to allow it.