Those are current problems with this mod, some may be addressed in the future, some may be too complex but there are workarounds from the player's side
Please keep this section clean and on topic only for bug reports, no suggestions.
If you are a modder and want to try to address some of those be my guest to help.

- there are some issues with already placed shelves and hydroponics when building a greenhouse over them
they will remain mid air

- overlapping other kind of shelter with the greenhouse or building walls breaks its heating system permanently, even if you remove those afterwards
the possibility to overlap different kind of shelters or building walls inside is a vanilla issue

- building fields for trees and other tall plants will have those go through the roof
for now is up to you to avoid that

Apparently harmless errors logged, quite complex to fix:
- there would be an error logged related to the power grid when removing a greenhouse that has hydroponics inside
- hovering the mouse over a greenhouse while building roofs would result in a log spam
Let me know if you discover that those actually have a negative impact and I'll try to investigate them more. If you are in debug mode just ignore those when prompted.

Nice to have, TODOs, didn't actually look into those very much:
- gather snow on top of the greenhouse
- completely remove the snow inside