[wp-trac] [WordPress Trac] #54553: Block editor requests to `?_wp-find-template=true` result in a 404 error

[WordPress Trac]

#54553: Block editor requests to `?_wp-find-template=true` result in a 404 error
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 Reporter:  noisysocks    |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  5.9
Component:  Editor        |     Version:
 Severity:  normal        |  Resolution:
 Keywords:  has-patch     |     Focuses:
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Comment (by costdev):

 == Test Report

 === Environment
 * WordPress 5.9-beta1
 * Chrome 96.0.4664.45
 * Windows 10
 * Theme: Twenty Twenty Two
 * Gutenberg Editor
 * Plugin: None activated

 === Steps to reproduce
 1. Navigate to `Posts > Add New`.
 2. Open DevTools.
 3. ✅ A 404 error appears:

  ?p=31&_wp-find-template=true 404 (Not Found)

 === Steps to test PR 1997

 1. Apply [https://github.com/WordPress/wordpress-develop/pull/1997 PR
 1997].
 2. Navigate to `Posts > Add New`.
 3. Open DevTools.
 4. ✅ The 404 error no longer appears.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/54553#comment:7>
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