Why is regular facebook so insanely buggy on iPhone?

The regular facebook site is buggy on the iPhone as its designed for desktop viewing, which means it handles clicks normally, and of course, because you “click” with your finger on mobile safari, its going to handle things differently, so theres going to be small things the developers haven’t accounted for.

The recent update to the app on the app store includes notifications now, so check if you have any app updates.