Bug: dealine-up sorting strategy does not work [9.2.6 (9.2.6-dist @ c:/Users/wlin/.emacs-lisp/org/lisp/)]

[Wanrong Lin]

If I call this:

(let ((org-agenda-sorting-strategy '((agenda deadline-up)))) 
(call-interactively 'org-agenda-list))

entries with deadline are at the bottom, after currently scheduled and 
past scheduled items. I think instead entries with deadlines should be 
at the top, before all other items without deadlines. I remember this 
was so before (deadline items at top), but forgot since when this bug 
sneaked in. Thanks for looking into it.

Warren

Set up:

Emacs  : GNU Emacs 26.3 (build 1, x86_64-w64-mingw32)

 of 2019-08-29
Package: Org mode version 9.2.6 (9.2.6-dist @ 
c:/Users/wlin/.emacs-lisp/org/lisp/)