[Evolution] Adding column in message list

[Kenneth Porter <shiva well com>]

I'm trying to use the add-column feature for the message list without
success. I select "add column" from the RMB menu in the column headers,
and get a popup dialog with several column titles to choose from. I try
to drag one (Received) up to the rightmost edge of the header and it
just flies back to the dialog. I can't figure out where I'm supposed to
put the point of the upside-down L to get it to take.

(I'd accidentally deleted the "Sent" column, and I'd actually rather
sort on when a message was received than when it was sent.)