Some of the issue here is the app version and the lines showing green when they should not show green, another bug Inno need to investigate.
@MIKE3399 own pic says it all, a green line from the incomplete tech "Simple Trail" and the Elvenar Wiki.
Who writes and updates the wiki in my opinion does not play the game regularly, the whole thing is full of misinformation and errors.
No wonder there is still confusion.