Just to confirm -
If you run your map on a/your server without ULX installed, those points prevent noclip (with sv_noclip 1)?
But, with same map, same server, and with ULX installed, it no longer prevents noclip in that area?
Or, do both above work, until a user with ulx noclip rights sets themself 'ulx noclip', and then they can noclip through?