Hi guys,
"Bug" being that it literally means: "...it is producing an incorrect or unexpected result, or to behave in unintended ways...", nothing more than that.
Joomla Registration standard page is working by grabbing the CAPTCHA use from this setting:
- Joomla > System > Users > Manage > User Options > Captcha: ... where, if "Global" is selected, it will follow the
--. Joomla > System > Global Configuration > Site > Captcha: ... setting
While, as far as I understand from my tests and confirmed by you: "...JFBConnect loads the /com_users/models/forms/registration.xml form, which generically specifies a 'captcha' field. That field may use the global configuration setting instead of the standard registration page setting..." = JFBC Social page Registration is grabbing it directly from Joomla Global Configuration
Doesn't matter if "...we've never had the question before...", most of users have User Options > Captcha set as "Global" and/or both configured in the same way).
For sure, if confirmed, it is not an urgent fix, but it is a "bug" and should be fixed on next releases. Please, Can you confirm it ?
JFBC should grab that setting from:
- Joomla > System > Users > Manage > User Options > Captcha: ... (where, when it will be set as "Global", it will follow the Global Configuration)