Multiple Navigation Meshes do not work

What causes only one of the multiple navigation meshes to work but the others don’t?

I’m not sure why it does that, but I just grab all nav meshes and move them slightly and they all build together.

Are any of them overlapping?

No, they are not overlapping they have a fair amount of distance.

I dont know what is going on but its not possible to add more than 1 or 2 in some cases.

This of course isn’t good because the level has to have sections where AI are suppose to appear
and with this its not possible.