NSX or just regular vSphere networking?
Expect a moderator to move your thread to the area for vSphere now that I’ve reported it.
I just found out that it's not working only when you right-click the host and try to add it from there, but it's working the regular way when I try to add it by going to Configure>Virtual switch > Add networking. Works just fine. I'm still wondering why it wouldn't work the other way.
I was never looking for a fix for it, just making sure the post was in the area for the best user audience.
I tried it in my network and in first instance its showing nothing in vlan id, but after repeating the same step again its started showing.
Have you retried the same step again...seems some type of flaw.