[wp-trac] [WordPress Trac] #45260: post_name collision in multiblog with sub pages

[WordPress Trac]

#45260: post_name collision in multiblog with sub pages
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 Reporter:  Daschmi             |      Owner:  (none)
     Type:  defect (bug)        |     Status:  new
 Priority:  normal              |  Milestone:  Awaiting Review
Component:  Networks and Sites  |    Version:  4.9.8
 Severity:  normal              |   Keywords:
  Focuses:  multisite           |
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 Wordpress Version: Version 4.9.8
 Multiblog installation with several Blogs on one domain

 - main blog with URL https://daschmi.de/
 - another blog with URL https://daschmi.de/blog1

 Problem

 On the root Blog i can not create a page with the page name "blog1" on a
 subpage.

 Example URL: https://blogoverview/blog1

 The problem is the funtion avoid_blog_page_permalink_collision in /wp-
 admin/includes/ms.php:640

 workaround for me after the is_main_site() check:

 if ($data['post_parent'] > 0) return $data;

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Ticket URL: <https://core.trac.wordpress.org/ticket/45260>
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