When I check my user page on stackexchange.com and then click on my logins, it does show all OpenID logins, but without any icon or the Remove (X) button.
On any other SE site however, the logins are displayed as well as the Remove (X) button. Here's an example from Super User:
Is this "by design" or a bug?
EDIT: No difference in Firefox 14.0.1, Chrome 21.0 and Internet Explorer 9.0.