Ihor Radchenko <yantar92@gmail.com> writes:

> "Christopher M. Miles" <numbchild@gmail.com> writes:
>
>> My Emacs version (on M1 macOS)
>>
>> GNU Emacs 28.0.60 (build 1, aarch64-apple-darwin20.6.0, NS appkit-2022.60 Version 11.6 (Build 20G165)) of 2021-10-20
>>
>> Thanks for your continuous working. I pulled latest fix, still not working.
>
> I also tested using Emacs 28.0.60, but on Linux. Can you try exactly
> same steps I used for testing?
>
> 1. Save the attached file to /tmp/problem.org
>
> 2.
>
> mkdir /tmp/orgmode-test
> cd /tmp/orgomode-test
> git clone git://git.sv.gnu.org/emacs/org-mode.git
> cd org-mode/
> emacs -Q -L ./lisp -l org /tmp/problem.org
>
> 3. M-x org-agenda <RET> < a
>
> If you do not see the heading listed in agenda view after doing above
> steps, can you also try to go to org-element.el and change
> "(version< emacs-version "28")" in org-element-cache-map to
> "(version< emacs-version "29")". Then, try the above steps again.
>
> Best,
> Ihor
>
> [2. application/vnd.lotus-organizer; df.org]...

Confirmed after change from "28" to "29" solved the problem in your steps.

I also tested this change on my current Emacs config. Also confirmed solved the problem.