UI bug in 10.4 which causes the page to appear to be loading all the time, each time you click the 'next' button when on the 'Select Applications' screen while editing a firewall rule in an NSX-T enabled Org VDC. VCD VERSION: 10.4 , 10.4.1
Known UI bug.
Fix is included in 10.4.2 version
Click twice while selecting the applications
Customer's UI experience.