[wp-trac] [WordPress Trac] #64721: menu-header.php uses relative file_exists() causing wrong submenu URL when PHP CWD is not wp-admin/

[WordPress Trac]

#64721: menu-header.php uses relative file_exists() causing wrong submenu URL when
PHP CWD is not wp-admin/
-----------------------------------+------------------------------
 Reporter:  paoltaia               |       Owner:  (none)
     Type:  defect (bug)           |      Status:  assigned
 Priority:  normal                 |   Milestone:  Awaiting Review
Component:  Administration         |     Version:  6.9.1
 Severity:  normal                 |  Resolution:
 Keywords:  has-patch 2nd-opinion  |     Focuses:
-----------------------------------+------------------------------
Changes (by ozgursar):

 * keywords:  has-patch needs-testing 2nd-opinion => has-patch 2nd-opinion


Comment:

 == Patch Testing Report

 Patch Tested: https://github.com/WordPress/wordpress-develop/pull/11054

 === Environment
 - WordPress: 7.0-beta1-20260225.232239
 - PHP: 8.3.30
 - Server: PHP.wasm
 - Database: WP_SQLite_Driver (Server: 8.0.38 / Client: 3.51.0)
 - Browser: Chrome 145.0.0.0
 - OS: macOS
 - Theme: Twenty Twenty-Five 1.4
 - MU Plugins:
   * GeoDirectory Fast AJAX 1.0.0
 - Plugins:
   * GeoDirectory 2.8.152
   * Test Reports 1.2.1

 === Steps taken
 1. Install GeoDirectory to latest trunk via WordPress Playground
 https://playground.wordpress.net/?php=8.3&wp=trunk&plugin=geodirectory
 2. Check the `Places > Settings` submenu page URL
 3. Confirm it links to `/wp-admin/admin.php?page=gd_place-settings`
 4. Apply patch via Playground link below:
 https://playground.wordpress.net/?php=8.3&wp=trunk&core-
 pr=11054&plugin=geodirectory
 5. Check the `Places > Settings` submenu page URL
 6. Confirm it links to `/wp-admin/edit.php?post_type=gd_place&page
 =gd_place-settings`
 x. ✅ Patch is solving the problem

 === Expected result
 - URL is correctly pointing at `/edit.php?post_type=XYZ`

 === Screenshots/Screencast with results
 Before patch
 [[Image(https://i.imgur.com/MtDaZOf.png)]]

 After patch
 [[Image(https://i.imgur.com/Q4eFQVI.png)]]

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Ticket URL: <https://core.trac.wordpress.org/ticket/64721#comment:3>
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