[O] Bug: Tag set in agenda need a refresh to be used in a filter [7.4]

[Nicolas Dudebout]

When filtering with a tag that was just added, the result is not as expected.

* Steps *
1 - Go in the agenda view.
2 - Attach a tag <T> to an entry <E>.
3 - Filter using tag <T>.
(4 - Refresh the view)

* Expected behavior *
by doing steps 1-3, entry <E> should appear in the filtered output.

* Actual behavior*
step 4 is needed to have entry <E> appear.

* Systems on which tests were performed *
+ emacs 23 with the included version of org-mode and zero configuration
+ emacs 24 with the included version of org-mode and zero configuration
+ emacs 24 with the git version of org-mode and some configuration

I tried to find the problem in org-agenda.el but got a little lost.

Regards,
Nicolas

Emacs  : GNU Emacs 24.0.50.1 (x86_64-pc-linux-gnu, GTK+ Version 2.24.5)
 of 2011-07-21 on cigue, modified by Debian
Package: Org-mode version 7.4

current state:
==============
(setq
 org-export-latex-format-toc-function 'org-export-latex-format-toc-default
 org-tab-first-hook '(org-hide-block-toggle-maybe org-src-native-tab-command-maybe
              org-babel-hide-result-toggle-maybe)
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-export-blocks-postblock-hook '(org-exp-res/src-name-cleanup)
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-src-mode-hook '(org-src-babel-configure-edit-buffer org-src-mode-configure-edit-buffer)
 org-export-interblocks '((lob org-babel-exp-lob-one-liners) (src org-babel-exp-inline-src-blocks))
 org-mode-hook '(#[nil "\300\301\302\303\304$\207"
           [org-add-hook change-major-mode-hook org-show-block-all append local] 5]
         #[nil "\300\301\302\303\304$\207"
           [org-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-babel-pre-tangle-hook '(save-buffer)
 org-export-first-hook '(org-beamer-initialize-open-trackers)
 org-export-preprocess-before-normalizing-links-hook '(org-remove-file-link-modifiers)
 org-export-preprocess-before-selecting-backend-code-hook '(org-beamer-select-beamer-code)
 org-confirm-shell-link-function 'yes-or-no-p
 org-export-latex-final-hook '(org-beamer-amend-header org-beamer-fix-toc org-beamer-auto-fragile-frames
                   org-beamer-place-default-actions-for-lists)
 org-speed-command-hook '(org-speed-command-default-hook org-babel-speed-command-hook)
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point org-babel-execute-safely-maybe)
 org-occur-hook '(org-first-headline-recenter)
 org-export-blocks '((src org-babel-exp-src-blocks nil) (comment org-export-blocks-format-comment t)
             (ditaa org-export-blocks-format-ditaa nil) (dot org-export-blocks-format-dot nil))
 org-agenda-files '("~/foo.org")
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers org-cycle-show-empty-lines
          org-optimize-window-after-visibility-change)
 org-confirm-elisp-link-function 'yes-or-no-p
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-export-latex-after-initial-vars-hook '(org-beamer-after-initial-vars)
 )