I've tested it, but the tasks with no deadlines are still on top of the list.

Le 4 avril 2022 13:42:26 GMT+02:00, Ihor Radchenko <yantar92@gmail.com> a écrit :
Sébastien Gendre <seb@k-7.ch> writes:

My Emacs version is 27.2 and Org is 9.4.4.

The value of "org-agenda-sorting-strategy" is:

((agenda habit-down time-up priority-down category-keep)
(todo priority-down category-keep deadline-up)
(tags priority-down category-keep deadline-up)
(search category-keep))

Try to move deadline-up to beginning of the lists:

((agenda habit-down time-up priority-down category-keep)
(todo deadline-up priority-down category-keep)
(tags deadline-up priority-down category-keep)
(search category-keep))

Best,
Ihor