With addons bobmods and Angels. I managed to research both "Chemical processing 2" and "Plastics" without having researched "Chemical Plant" no matter the fact that the tree view is showing it as a prerequisite.
See screenshoot as attachement.
Inconsistent progression in tech tree
Re: Inconsistent progression in tech tree
The chemical plant research is added by bobrevamp, and wasn't needed when you first researched plastics. The chemical plant research was added after that.
NaB
NaB
no yes yes no yes no yes yes
Re: Inconsistent progression in tech tree
[Koub] Topic moved to Not a bug
Koub - Please consider English is not my native language.