I know. I completely agree. It needs to be fixed
Current solutions
1)when you get to a farm plot where it says this, do a 360 and do it again (no jokes, this actually works for me) or just move up, down left and right a few times.
2) if you have bought some new farms and it says this, ust the grid to move them. Just move them out of the way and back exactly to where it was and it should be fine.
Hope this helped!
Still needs to be fixed though!!!