Has my game glitched?

I am missing one field note which isn’t showing up on my map but when I hover over this Fieldwork it shows a note on the map even though I have 12/12. Anything I can do to fix this mess?

I am missing one field note which isn’t showing up on my map but when I hover over this Fieldwork it shows a note on the map even though I have 12/12. Anything I can do to fix this mess?