Have you tried to switch between global and following feed and / or Post / Post & Replies (on Profiles). Usually, those seem to help if this does not do the trick:
Discussion
That usually helps but not the last couple days. The follow feed and global feed are broken right now. They keep showing all these notifications to other users. My blocklist isn't persisting anymore. I keep adding npubs to it, and then I see the same npubs in my feed later so I go back and check the blocklist and it says 0 blocked users.