press your menu button, there are two menus, one is called system configuration, the other is called character configuration.

You want system configuration menu. in the bottom tab in system configuration there It's a box you can click on or select, its called on screen visualisations for on screen sounds.

this is not a bug.

I'm on my phone so i can not offer a screen shot.

you can also Google "on screen visual sound ffxiv" and I'm sure you will find a result which tells you how to turn it off.

i think your first language is not English, because Demeos' answer was real and valid. it was almost rude to say their answer wasn't real.

your game is not bugged. please try Google.