When an administrator opens Configuration tab in Openstack deployment in Openstack Manager Web UI, a loading icon is stuck for ONLY NSX-T configuration although other configurations are shown correctly.
This issue happens when the administrator set multiple IP addresses of NSX-T Managers to nsx_api_managers parameter described at Configure VMware Integrated OpenStack with an NSX Manager Cluster.
This is a known issue in VMware Integrated Openstack 6.x and 7.x.
Check configurations about NSX-T manager another way such as the following: