I’m using Firefox with the default facebook contrainer feature enabled, that blocks any facebook scripts. Lately I have noticed the fence icon in the top left of the screen that signals some facebook script is blocked.
Looking at the webpage source we can find
<div class="fbc-badge js-fbc-UID_1 fbc-badge-small fbc-badge-share fbc-badge-prompt-align-top fbc-badge-disabled" style="z-index: 3002; left: -12px; top: -5px;"><div class="fbc-badge-fence"></div><div class="fbc-badge-tooltip">Facebook Container has disabled this button and blocked Facebook from tracking your visit to this page.</div><div class="fbc-badge-prompt"></div></div>
which looks to me like some facebook element outside of the visible website area. Is this actively used by someone? If not maybe it could be removed? I don’t really know how Discourse works and if it would be possible but I thought I would just throw it out there.