I use Facebook everyday and they're quite slow and buggy. Sometime pressing back button doesn't work. Sometime even pressing the "previous" or "next" image icon

I use Facebook everyday and they're quite slow and buggy. Sometime pressing back button doesn't work. Sometime even pressing the "previous" or "next" image icon takes a while or failed to load. Especially in their image section: press "next" and use the back button immediately (but not too fast), you'll see some "oops"