Renaming custom page templates

I added a new page template to my page template set. In contrary to the two default templates ‘Default’ and ‘First’ I don’t seem to be able to rename that custom page template using the pen icon (which is greyed out)
Is this true or am I missing something?

Once one chooses the layout to be renamed, it is not the pen/pencil icon but one next to it that allows one to rename it.

You’re right @Derrek thanks. More than this: I just could not replicate the issue, nothing is greyed out anymore. Something was stuck maybe.