Social Media Share footer doesn't display on Contribution pages when requested
While testing https://github.com/civicrm/civicrm-core/pull/18880 I noticed that selecting "Add footer region with Twitter, Facebook and LinkedIn share buttons and scripts?" in the config screen for contribution pages showed the social share footer on event pages but not contribution pages for Joomla.
A bit more testing and I found the same behaviour on D7, D8, Backdrop and Wordpress, which you can see on the sandbox sites (for e.g. https://wpmaster.demo.civicrm.org/contribution-page/ & https://dmaster.demo.civicrm.org/civicrm/contribute/transact?reset=1&id=1 don't include the footer, even tho it is selected in the admin interface).
Either the footer isn't supposed to display, and the Contribution Page config page should remove "Add footer region with Twitter, Facebook and LinkedIn share buttons and scripts?" check box – or there's an issue with the display of the social footer.