Remember to cover the basics, that is, what you expected to happen and
what in fact did happen. You don't know how to make a good report? See
https://orgmode.org/manual/Feedback.html#FeedbackYour bug report will be posted to the Org mailing list.
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Assume there is an entry as simple as following
* a simple entry
Move the cursor on the entry, then press C-c C-s for setting its
SCHEDULED property. Then type `23:59+0:30` and press Enter key. The
resulting SCHEDULED property will be an ill-formed value such as
`<2022-02-19 Sat 23:59-24:29>`, which will cause error in org agenda.
Emacs : GNU Emacs 27.1 (build 1, x86_64-apple-darwin18.7.0, NS appkit-1671.60 Version 10.14.6 (Build 18G95))
of 2020-08-12
Package: Org mode version 9.5.2 (9.5.2-gfbff08 @ /Users/liutos/.emacs.d/elpa/org-9.5.2/)