SS4.1
Consider a situation where the parent page P has "lumberjacked" child pages C, which in turn also have "lumberjacked" grandchild pages G.
A grandchild page G when edited, cannot be rendered in the Sitetree navigation, because its parent C node is hidden in the navigation.
I believe that is the cause of the js error.
SS4.1
Consider a situation where the parent page P has "lumberjacked" child pages C, which in turn also have "lumberjacked" grandchild pages G.
A grandchild page G when edited, cannot be rendered in the Sitetree navigation, because its parent C node is hidden in the navigation.
I believe that is the cause of the js error.