Whatever host name you use for a server when you create it won't change when you update it. Clicking "Save Changes" does not update the name displayed. Example of what I'm talking about is in the screen shot below. Not a big deal, just annoying.
There's a reason for this. The name is used as an index to the server statistics. Let's just call the team to lazy to program for all the consequences that a name change had. We'll try to patch this up in a future release.