[wp-trac] [WordPress Trac] #64956: Unnecessary horizontal scrollbar on theme-editor.php in WordPress 7.0 RC1

[WordPress Trac]

#64956: Unnecessary horizontal scrollbar on theme-editor.php in WordPress 7.0 RC1
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 Reporter:  hardik2812              |       Owner:  (none)
     Type:  defect (bug)            |      Status:  new
 Priority:  normal                  |   Milestone:  Awaiting Review
Component:  General                 |     Version:
 Severity:  normal                  |  Resolution:
 Keywords:  has-test-info has-      |     Focuses:  ui, css, administration
  patch                             |
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Comment (by nikunj8866):

 == Test Report
 === Description
 ✅ This report validates that the patch works as expected.

 Patch tested: https://github.com/WordPress/wordpress-develop/pull/11588

 === Environment
 - WordPress: 7.1-alpha-20260416.100837
 - PHP: 7.4.33
 - Server: PHP.wasm
 - Database: WP_SQLite_Driver (Server: 8.0.38 / Client: 3.51.0)
 - Browser: Chrome 146.0.0.0
 - OS: Windows 10/11
 - Theme: Twenty Twenty-Five 1.4
 - MU Plugins: None activated
 - Plugins:
   * Test Reports 1.2.1

 === Steps to Test
 1. Apply the patch from the linked pull request to a WordPress
 installation.
 2. Navigate to Tools > Theme File Editor (theme-editor.php).
 3. Resize the browser window to a small viewport width (e.g., below 768px
 or mobile-sized).
 4. Observe whether a horizontal scrollbar appears on the Theme Files
 section.
 5. Navigate to Tools > Plugin File Editor (plugin-editor.php).
 6. Again, resize the browser window to a small viewport width.
 7. Observe whether a horizontal scrollbar appears on the Plugin Files
 section.

 === Actual Results
 1.  ✅ Issue resolved with patch.
 2. Unnecessary horizontal scrollbar on theme-editor.php is resolved with
 the patch — no horizontal scroll at small widths.
 3. Unnecessary horizontal scrollbar on plugin-editor.php is also resolved
 — no horizontal scroll at small widths.
 4. ✅ Patch also tested on WordPress 6.3 — working as expected with no
 regressions.


 === Supplemental Artifacts
 https://www.awesomescreenshot.com/video/51596248?key=ffed62429a24e4a0d7a07e4fa4de3983

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Ticket URL: <https://core.trac.wordpress.org/ticket/64956#comment:9>
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