[O] Bug: problem with org-agenda and categories [9.1.9 (release_9.1.9-65-g5e4542 @ /usr/share/emacs/26.1/lisp/org/)]

[rrandresf]

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#Feedback

Your bug report will be posted to the Org mailing list.
------------------------------------------------------------------------

When evaluating the snippet below:
--8<---------------cut here---------------start------------->8---
(eval-after-load "org"
  '(progn
;;;; overwrite some settings
     (setq org-startup-folded nil ;unfolded
           org-agenda-show-all-dates t
           org-confirm-elisp-link-function nil ;; 4 the scratch call
           org-agenda-include-diary t
           org-agenda-include-all-todo t
           )
     (when (file-directory-p "~/docs/org/deft/")
       (setq org-agenda-files (directory-files "~/docs/org/deft/" t 
".*agendatest\.org$"))
       )
     (define-key org-mode-map (kbd "M-a") nil)
     ))

(require 'org)

(funcall 'org-agenda-list)
--8<---------------cut here---------------end--------------->8---

I am getting (which is not fine):
--8<---------------cut here---------------start------------->8---
Week-agenda (W27):
Monday      2 July 2018 W27
  final:       9:00...... wc: 1eBrazil - 2fMexico (samara){16}
  final:      13:00...... wc: 1gBelgica - 2hJapon (rostov){16}
Tuesday     3 July 2018
  final:       9:00...... wc: 2eSuiza - 1fSuecia (san petersburgo){16}
  final:      13:00...... wc: 2gInglaterra - 1hColombia (moscu){16}
Wednesday   4 July 2018
  Diary:      Independence Day
Thursday    5 July 2018
Friday      6 July 2018
               0:38...... now - - - - - - - - - - - - - - - - - - - - - - - - -
               8:00...... ----------------
  final:       9:00...... wc: 1qfFrancia - 2qfUruguay (nizhny){4}
              10:00...... ----------------
              12:00...... ----------------
  final:      13:00...... wc: 5qfBrasil - 6qfBelgica (kazán){4}
              14:00...... ----------------
              16:00...... ----------------
              18:00...... ----------------
              20:00...... ----------------
Saturday    7 July 2018
  final:       9:00...... wc: 7qfRusia - 8qfCrocia (samara){4}
  final:      13:00...... wc: 3qfSuecia - 4qfInglaterra (sochi){4}
Sunday      8 July 2018
--8<---------------cut here---------------end--------------->8---

the output should be:
--8<---------------cut here---------------start------------->8---
Week-agenda (W27):
Monday      2 July 2018 W27
  8:           9:00...... wc: 1eBrazil - 2fMexico (samara){16}
  8:          13:00...... wc: 1gBelgica - 2hJapon (rostov){16}
Tuesday     3 July 2018
  8:           9:00...... wc: 2eSuiza - 1fSuecia (san petersburgo){16}
  8:          13:00...... wc: 2gInglaterra - 1hColombia (moscu){16}
Wednesday   4 July 2018
  Diary:      Independence Day
Thursday    5 July 2018
Friday      6 July 2018
  4:           9:00...... wc: 1qfFrancia - 2qfUruguay (nizhny){4}
  4:          13:00...... wc: 5qfBrasil - 6qfBelgica (kazán){4}
Saturday    7 July 2018
  4:           9:00...... wc: 7qfRusia - 8qfCrocia (samara){4}
  4:          13:00...... wc: 3qfSuecia - 4qfInglaterra (sochi){4}
Sunday      8 July 2018
--8<---------------cut here---------------end--------------->8---

the file ~/docs/org/deft/jl-diary.agendatest.org:
--8<---------------cut here---------------start------------->8---
* the world cup on my agenda
#+CATEGORY: groups
%%(diary-block 6 22 2018 6 22 2018) 7:00 wc: brazil - costa rica (sans 
petersburgo){GE2}
%%(diary-block 6 22 2018 6 22 2018) 10:00 wc: nigeria - islanda 
(volgogrado){GD2}
%%(diary-block 6 22 2018 6 22 2018) 13:00 wc: serbia - suiza (kaliningrado){GE2}
%%(diary-block 6 23 2018 6 23 2018) 07:00 wc: belgica - tunez (otkrytiye, 
moscu){GG2}
%%(diary-block 6 23 2018 6 23 2018) 10:00 wc: mexico - korea (rostov){GF2}
%%(diary-block 6 23 2018 6 23 2018) 13:00 wc: alemania - suecia (sochi){GF2}
%%(diary-block 6 24 2018 6 24 2018) 07:00 wc: inglaterra - panama (nizhny){GG2}
%%(diary-block 6 24 2018 6 24 2018) 10:00 wc: japon - senegal 
(ekaterimburgo){GH2}
%%(diary-block 6 24 2018 6 24 2018) 13:00 wc: colombia - polonia (kazán){GH2}
%%(diary-block 6 25 2018 6 25 2018) 09:00 wc: uruguay - rusia (samara){GA3}
%%(diary-block 6 25 2018 6 25 2018) 09:00 wc: egipto - arabia (volgogrado){GA3}
%%(diary-block 6 25 2018 6 25 2018) 13:00 wc: portugal - iran (saransk){GB3}
%%(diary-block 6 25 2018 6 25 2018) 13:00 wc: espanha - marruecos 
(kaliningrado){GB3}
%%(diary-block 6 26 2018 6 26 2018) 09:00 wc: Dinamarca - francia (luzhniki, 
moscu){GC3}
%%(diary-block 6 26 2018 6 26 2018) 09:00 wc: PERÙ - australia (sochi){GC3}
%%(diary-block 6 26 2018 6 26 2018) 13:00 wc: argentina - nigeria (san 
petersburgo){GD3}
%%(diary-block 6 26 2018 6 26 2018) 13:00 wc: croacia - islandia (rostov){GD3}
%%(diary-block 6 27 2018 6 27 2018) 09:00 wc: corea - alemania (kazán){GF3}
%%(diary-block 6 27 2018 6 27 2018) 09:00 wc: mexico - suecia 
(ekaterimburgo){GF3}
%%(diary-block 6 27 2018 6 27 2018) 13:00 wc: brazil - serbia (otkrytiye, 
moscu){GE3}
%%(diary-block 6 27 2018 6 27 2018) 13:00 wc: suiza - costa rica  (nizhny){GE3}
%%(diary-block 6 28 2018 6 28 2018) 09:00 wc: polonia - japon (volgogrado){GH3}
%%(diary-block 6 28 2018 6 28 2018) 09:00 wc: colombia - senegal (samara){GH3}
%%(diary-block 6 28 2018 6 28 2018) 13:00 wc: inglaterra - belgica 
(kaliningrado){GG3}
%%(diary-block 6 28 2018 6 28 2018) 13:00 wc: panama - tunez (saransk){GG3}

#+CATEGORY: 8
%%(diary-block 6 30 2018 6 30 2018) 09:00 wc: 1cFrancia - 2dArgentina 
(kazán){16}
%%(diary-block 6 30 2018 6 30 2018) 13:00 wc: 1aUruguay -2bPortugal (sochi){16}
%%(diary-block 7 01 2018 7 01 2018) 09:00 wc: 2aRusia - 1bEspaña (moscu){16}
%%(diary-block 7 01 2018 7 01 2018) 13:00 wc: 2cDinamarca - 1dCroacia 
(nizhny){16}
%%(diary-block 7 02 2018 7 02 2018) 09:00 wc: 1eBrazil - 2fMexico (samara){16}
%%(diary-block 7 02 2018 7 02 2018) 13:00 wc: 1gBelgica - 2hJapon (rostov){16}
%%(diary-block 7 03 2018 7 03 2018) 09:00 wc: 2eSuiza - 1fSuecia (san 
petersburgo){16}
%%(diary-block 7 03 2018 7 03 2018) 13:00 wc: 2gInglaterra - 1hColombia 
(moscu){16}

#+CATEGORY: 4
%%(diary-block 7 06 2018 7 06 2018) 09:00 wc: 1qfFrancia - 2qfUruguay 
(nizhny){4}
%%(diary-block 7 06 2018 7 06 2018) 13:00 wc: 5qfBrasil - 6qfBelgica (kazán){4}
%%(diary-block 7 07 2018 7 07 2018) 09:00 wc: 7qfRusia - 8qfCrocia (samara){4}
%%(diary-block 7 07 2018 7 07 2018) 13:00 wc: 3qfSuecia - 4qfInglaterra 
(sochi){4}
#+CATEGORY: semi-final
%%(diary-block 7 10 2018 7 10 2018) 09:00 wc: 1sf - 2sf (san petersburgo){SF}
%%(diary-block 7 11 2018 7 11 2018) 09:00 wc: 3sf - 4sf (moscu){SF}
#+CATEGORY: final
%%(diary-block 7 14 2018 7 14 2018) 09:00 wc: 1p - 2p (san petersburgo){F}
%%(diary-block 7 15 2018 7 15 2018) 09:00 wc: 1f - 2f (luzhniki, moscu){F}
--8<---------------cut here---------------end--------------->8---

Emacs  : GNU Emacs 26.1 (build 2, armv7l-unknown-linux-gnueabihf, X toolkit, 
Xaw3d scroll bars)
 of 2018-06-28
Package: Org mode version 9.1.9 (release_9.1.9-65-g5e4542 @ 
/usr/share/emacs/26.1/lisp/org/)

current state:
==============
(setq
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
                  org-cycle-show-empty-lines
                  org-optimize-window-after-visibility-change)
 org-archive-hook '(org-attach-archive-delete-maybe)
 org-agenda-include-diary t
 org-agenda-files '("/home/olla/docs/org/deft/jl-diary.agendatest.org")
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-babel-pre-tangle-hook '(save-buffer)
 org-occur-hook '(org-first-headline-recenter)
 org-mode-hook '(#[0 "\300\301\302\303\304$\207"
                   [add-hook change-major-mode-hook org-show-block-all append
                    local]
                   5]
                 #[0 "\300\301\302\303\304$\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-speed-command-hook '(org-speed-command-activate
                          org-babel-speed-command-activate)
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-startup-folded nil
 org-bibtex-headline-format-function #[257 "\300\236A\207" [:title] 3 "\n\n(fn 
ENTRY)"]
 org-confirm-shell-link-function 'yes-or-no-p
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 org-tab-first-hook '(org-babel-hide-result-toggle-maybe
                      org-babel-header-arg-expand)
 org-link-parameters '(("id" :follow org-id-open)
                       ("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)
                       ("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) ("file+sys")
                       ("file+emacs") ("doi" :follow org--open-doi-link)
                       ("elisp" :follow org--open-elisp-link)
                       ("file" :complete org-file-complete-link)
                       ("ftp" :follow
                        (lambda (path) (browse-url (concat "ftp:" path))))
                       ("help" :follow org--open-help-link)
                       ("http" :follow
                        (lambda (path) (browse-url (concat "http:" path))))
                       ("https" :follow
                        (lambda (path) (browse-url (concat "https:" path))))
                       ("mailto" :follow
                        (lambda (path) (browse-url (concat "mailto:"; path))))
                       ("news" :follow
                        (lambda (path) (browse-url (concat "news:"; path))))
                       ("shell" :follow org--open-shell-link))
 org-src-mode-hook '(org-src-babel-configure-edit-buffer
                     org-src-mode-configure-edit-buffer)
 org-confirm-elisp-link-function nil
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 )