Mike Kupfer wrote on xemacs-services:

I had used "assign to me", added myself to the nosy list, and saved the
changes.  

2011-06-30 15:09:39	mike.kupfer	set	assignedto: mike.kupfer
						nosy: + mike.kupfer

Then I added a note and clicked on "Submit changes".  At that point it
apparently cleared the assignedto field.

2011-06-30 15:22:25	mike.kupfer	set	assignedto: mike.kupfer -> (no value)
						messages: + msg2324

I don't remember what the menu showed when I saved the note.

> You can add or subtract the Developer role by clicking on the "Your
> Details" link in the sidebar, and typing it into the "Roles" field
> (comma-separated).  You don't need to do anything now, it's already
> done for you, but feel free to tell other people how to do it if they
> have the same experience. :-)

That sounds good, except my Details page doesn't show me a Roles field.
I do see an "Is Developer?" checkbox, which looks like

  Is Developer? [] Add Developer Role. (User,Developer)

...where "Is Developer?" is a blue-gray text label, [] is an unselected
checkbox, and the rest of the line is additional (black) text.