[Orgmode] bug in tag search

[King Sun]

Hi, Carsten:

I would like to report a bug in org mode for tag search.

=== version infomation ===

emacs-version: 22.0.50.1
org-version: 4.68

=== example file ===

* root
** head1                                        :Tag1:
  this is head 1
** head2                                        :Tag2:
  this is head 2
** head3                                        :Tag3:
  this is head 3
** head4                                        :Tag1:
  this is head 4
** head5                                        :Tag2:
  this is head 5
** head6                                        :Tag3:
  this is head 6

=== 1. What exactly did you do? ===
do tag search by C-c \ Tag1

=== 2. What did you expect to happen? ===
* root
** head1                                        :Tag1:...
** head4                                        :Tag1:...

=== 3. What happened instead? ===
* root
** head1                                        :Tag1:...
** head2                                        :Tag2:...
** head4                                        :Tag1:...
** head5                                        :Tag2:...


this bug does not exist in org-4.52
--
King Sun