Hello,
thank you for picking this Mod up/ updating it.
The problem is that certain buildings from other mods ( I noticed it with Angels chemical plant, hydro plant and washing plant) grow into trees after some time.
Edit: Just to describe it a little better. I think those buildings are seen as saplings and it only happens when they are newly build.
Since I use quite a few mods (e.g., seablock) and haven't installed this mod for long, I can't say how widespread the problem is or whether it has only occurred since the (pre-)last patch.
Greetings Cryoge