It looks like there is a bug with apple trees textures…
I tried to show this graphically on the screenshot:
- red circles - walkways under tree crowns; everything was fine before they grew up.
- orange lines - as it seems to me, impassable textures are spreading.
- yellow lines - the route of the colonists from points “X” on the road to the garden.
Also, I have a lot of messages in “Logger: General log” - “Null reference exeption”…
I hope you will eventually fix this bug