Field 16: GPS lines only show for the headland. Working the field seemed to work fine (liquid fertilizer), just had to use compass/eyes/map to do the middle of the field.
VERY VERY minor thing that probably isn't worth fixing unless it's literally just an edit to a text input: the screen that pops up when you find the first collectible says
"... Will you be the first to collect all 25?
You found a farm ball! There are 49 more."
Finding subsequent ones will just have the countdown (48, 47...) as expected so it's really not anything anybody else would notice lol.
I also now realize that icon below the Grain Barge is probably a collectible? But there's no action for it, likely because you're swimming there and the collectible is out of reach?