If you’ve been getting notifications hidden and but tappable under your search bar in Facebook, it’s not just you… at least on Android.
You can restore the topmost notification for a short time by going to settings, apps, finding facebook, ending task, clearing cache (do not clear data,) and you’ll be sailing along for a while before it gets covered up again.
It’ll be fixed, it’s not you. It’s Facebook.
If you don’t have the issue, I wish I’d taken a screenshot this morning but basically you can see the bottom third or fourth of the latest notification peeking out from underneath the search bar.