Navigation not baking on Probuild objects

I made some objects with probuilder and placed them through a section of floor but when I bake the nav grid it doesn’t mark off the object and the bots pass through the object. It has a mesh collider on it. Not sure what the issue is. I searched the forum but didn’t find anything on the subject.

Not familiar with Pro Builder, but do the objects need RigidBodies as well?

No, that didn’t help. Changing to a box collider from a mesh collider didn’t either. I see the issue is also present with things like the arch way and stone heads I added.