Spaces In Page Names Breaks Menu ID?

My blog and about pages generate the active class for the matching menu items. But my Contact Me and Other Sites pages do not.

Do the page names need to be sluggified? The folder names are me and 04.other sites respectively.

Folder names need to be valid slugs. That means you can’t have spaces. There is a note in the documentation about this.

I missed that. All fixed now.