I've noticed a significant bug while using uBlock Origin on Facebook. In Facebook Groups, the "New Posts" sorting feature stopped working correctly, and many posts (especially text-only ones) were not showing up at all in the feed. Even though the sidebar indicated new activity, the main feed remained broken or stuck.
After some troubleshooting, I disabled uBlock Origin for Facebook, and the issue was immediately resolved-all posts appeared and the sorting worked again. It seems some cosmetic filters or scripts might be over-blocking essential Facebook Group elements.