Hello! I seem to have a wonky little thing where my little worker bots can never seem to find the tree hole they just dug. I thought it might be a too far away thing...but this happens even if the hole is right next to them. :(
I can't seem to trigger the red circle that you mention, but it does seem to be that the "fix" is to just dig a few random holes until it likes one of them. So I've just got a few extra holes dug around and that seems to be preventing the issue.