Clock dates - org-shiftdown not working

[Tebe Nigrelli <nigrellitebe@gmail.com>]

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On a clean configuration, applying org-shiftdown does not work for the
following date format, written as a clock. I want to reduce the number of
hours
on the second date from "03:" to "02:". This is what happens if I apply
org-shiftdown:
- On the minutes :: from ":XX" minutes, there is a decrease by the usual
"default" amount (5 minutes), but after reaching "00", the count decreases
to 55 without decreasing the number of hours to "02"
- On the hours   :: "03" does not roll back to "02", but can roll up to "04"
or "05"
- Minutes / Days / Years all work as intended

This bug appears in a scratch buffer in org-mode.
Manually editing the date and applying C-c C-c reverts the "02:" date to
"03:"

Instructions to reproduce the bug:
Try doing org-shiftdown on the minutes "05" or the hours "03".
Result:
CLOCK: [2023-03-25 Sat 21:40]--[2023-03-26 Sun 03:05] =>  4:25

Emacs : GNU Emacs 28.2 (build 2, x86_64-apple-darwin22.1.0, NS
 appkit-2299.00 Version 13.0.1 (Build 22A400)) of 2023-02-05 Package:
 Org mode version 9.5.5 (release_9.5.5 @
 /usr/local/Cellar/emacs-plus@28/28.2/share/emacs/28.2/lisp/org/)

current state:
==============
(setq
 org-link-elisp-confirm-function 'yes-or-no-p
 org-bibtex-headline-format-function #[257 "\300\236A\207" [:title] 3
"\n\n(fn ENTRY)"]
 org-export-before-parsing-hook '(org-attach-expand-links)
 org-archive-hook '(org-attach-archive-delete-maybe)
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
 org-cycle-show-empty-lines
 org-optimize-window-after-visibility-change)
 org-mode-hook '(#[0 "\300\301\302\303\304$\207"
  [add-hook change-major-mode-hook org-show-all append local]
  5]
#[0 "\300\301\302\303\304$\207"
  [add-hook change-major-mode-hook org-babel-show-result-all
   append local]
  5]
org-babel-result-hide-spec org-babel-hide-all-hashes)
 org-confirm-shell-link-function 'yes-or-no-p
 outline-isearch-open-invisible-function 'outline-isearch-open-invisible
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-src-mode-hook '(org-src-babel-configure-edit-buffer
    org-src-mode-configure-edit-buffer)
 org-confirm-elisp-link-function 'yes-or-no-p
 org-speed-command-hook '(org-speed-command-activate
 org-babel-speed-command-activate)
 org-tab-first-hook '(org-babel-hide-result-toggle-maybe
     org-babel-header-arg-expand)
 org-link-shell-confirm-function 'yes-or-no-p
 org-babel-pre-tangle-hook '(save-buffer)
 org-agenda-loop-over-headlines-in-active-region nil
 org-occur-hook '(org-first-headline-recenter)
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-link-parameters '(("attachment" :follow org-attach-follow :complete
org-attach-complete-link)
      ("id" :follow org-id-open)
      ("eww" :follow org-eww-open :store org-eww-store-link)
      ("rmail" :follow org-rmail-open :store
org-rmail-store-link)
      ("mhe" :follow org-mhe-open :store org-mhe-store-link)
      ("irc" :follow org-irc-visit :store org-irc-store-link
:export org-irc-export)
      ("info" :follow org-info-open :export org-info-export
:store org-info-store-link)
      ("gnus" :follow org-gnus-open :store
org-gnus-store-link)
      ("docview" :follow org-docview-open :export
org-docview-export :store org-docview-store-link)
      ("bibtex" :follow org-bibtex-open :store
org-bibtex-store-link)
      ("bbdb" :follow org-bbdb-open :export org-bbdb-export
:complete org-bbdb-complete-link :store
org-bbdb-store-link)
      ("w3m" :store org-w3m-store-link)
      ("doi" :follow org-link-doi-open :export
org-link-doi-export)
      ("file+sys") ("file+emacs")
      ("shell" :follow org-link--open-shell)
      ("news" :follow
#[514 "\301\300\302Q\"\207"
 ["news" browse-url ":"] 6 "\n\n(fn URL ARG)"]
)
      ("mailto" :follow
#[514 "\301\300\302Q\"\207"
 ["mailto" browse-url ":"] 6 "\n\n(fn URL ARG)"]
)
      ("https" :follow
#[514 "\301\300\302Q\"\207"
 ["https" browse-url ":"] 6 "\n\n(fn URL ARG)"]
)
      ("http" :follow
#[514 "\301\300\302Q\"\207"
 ["http" browse-url ":"] 6 "\n\n(fn URL ARG)"]
)
      ("ftp" :follow
#[514 "\301\300\302Q\"\207" ["ftp" browse-url ":"]
 6 "\n\n(fn URL ARG)"]
)
      ("help" :follow org-link--open-help :store
org-link--store-help)
      ("file" :complete org-link-complete-file)
      ("elisp" :follow org-link--open-elisp))
 org-metaup-hook '(org-babel-load-in-session-maybe)
 )

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