I have the code for FB MCC loading 26 times on a live page.
Looking at the JS code, there is no attempt to prevent multiple loading - even though it's called for every BigPipe and Ajax load.
This patch fixes that, and makes better use of jQuery's prepend code.
1.4
Code
Not all content is available!
It's likely this issue predates Contrib.social: some issue and comment data are missing.
We should probably be making use of Drupal's jquery.once library for this as that's the more standard solution. Here's accomplishing the same goal, but using jquery.once instead of a custom class solution.
No interdiff is provided as this is a new patch with no relation to the first.