Ever since somewhere around the test4 update from rawhide, when I have a message
in a mail folder highlighted and click the delete icon, it does not advance to
the next message in the folder, it simply leaves no mail message selected, so
that now when I want to delete a string of messages in a folder, I have to click
on a message, click delete, click on the next message I want to view, click
delete, etc.  This seriously reduces mail processing speed.