What does 'FN11 Return' mean? (G80/81/85)

[Peadingle]

I have just noticed 'FN11 Return' in my G80 viewfinder. As there is no FN 11 function button, what does it mean? And how should I respond to it?

 

[Peadingle]

FN11 is the button in the middle of the top rear dial. Not sure what state it will be returning from.

Ah - I see it now. the issue that I have is that I can't get out of AFF (where the little box stays on the focus area) unless I use iA mode. I have AFS/AFF set to AFS in the menu.