Facebook has been changing their mobile app layout frequently and has only recently rolled out its best design yet.
Other’s are wondering though why the shortcuts at the topside are different from each other and the short answer is that Facebook adjusts it according to your most used button. You’ll still have access to the rest of them on the MORE button tho.
BUT… What if you don’t like the shortcuts that Facebook has determined for you? Luckily, we have the answer for that.
All you gotta do is hold down on the shortcut you wish to remove and facebook will show you the option to remove it! It’ll then replace it after some time with another more frequently used shortcut.