Idk why but this didnt happend to me in any iOS versions. My messenger notifications shows and then dissapear. Maybe someone experiencing the sam problem? I've tryed to reinstall messenger but nothing...
You haven't got the Facebook website open on a computer somewhere? I left it open on my work machine and it caused the notifications to appear then disappear (but not get marked as read).
You haven't got the Facebook website open on a computer somewhere? I left it open on my work machine and it caused the notifications to appear then disappear (but not get marked as read).