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Improve output buffer for sending server-timing header#72536

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youknowriad merged 2 commits intotrunkfrom
fix/gutenberg-e2e-server-timing-mu-plugin
Oct 21, 2025
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Improve output buffer for sending server-timing header#72536
youknowriad merged 2 commits intotrunkfrom
fix/gutenberg-e2e-server-timing-mu-plugin

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@westonruter westonruter commented Oct 21, 2025 •
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See Slack thread.

Fixes E2E issues like this:

image

To reproduce the original issue, active the Twenty Twenty-One theme,

Create and activate a gutenberg-e2e-server-timing.php file in your plugins directory which contains:

<?php
/**
 * Plugin Name: Gutenberg E2E Server Timing
 */

require_once __DIR__ . '/gutenberg/packages/e2e-tests/mu-plugins/server-timing.php';

Then publish a post which contains the following post_content:

<!-- wp:paragraph {"style":{"elements":{"link":{"color":{"text":"var:preset|color|white"}}}}} -->
<p class="has-link-color">Check out this link: <a href="/">HOME</a></p>
<!-- /wp:paragraph -->

When working correctly, the link in the paragraph should be white. When failing, the link has no overridden color.

Diff showing prettiered HTML with expected and actual output when failure happens: https://gist.github.com/westonruter/7da9c101d9f4429c2c40bf2907e8cd9f

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github-actions bot commented Oct 21, 2025 •
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Co-authored-by: westonruter <[email protected]>
Co-authored-by: youknowriad <[email protected]>

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@westonruter westonruter added [Type] Bug An existing feature does not function as intended [Tool] E2E Test Utils /packages/e2e-test-utils [Type] Automated Testing Testing infrastructure changes impacting the execution of end-to-end (E2E) and/or unit tests. and removed [Type] Bug An existing feature does not function as intended [Tool] E2E Test Utils /packages/e2e-test-utils labels Oct 21, 2025
youknowriad
youknowriad approved these changes Oct 21, 2025
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I was hoping it would fix all the e2e test failures but it didn't.

It did fix a couple (color support and content locking) If I'm looking properly.

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youknowriad commented Oct 21, 2025

I pushed a small command palette fix that should hopefully fix the remaining e2e test failures (related to command palette)

@youknowriad youknowriad added No Core Sync Required Indicates that any changes do not need to be synced to WordPress Core Backport to WP 6.9 Beta/RC Pull request that needs to be backported to the WordPress major release that's currently in beta labels Oct 21, 2025
@youknowriad youknowriad enabled auto-merge (squash) October 21, 2025 15:33
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github-actions bot commented Oct 21, 2025

Flaky tests detected in a530420.
Some tests passed with failed attempts. The failures may not be related to this commit but are still reported for visibility. See the documentation for more information.

🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/18688592555
📝 Reported issues:

@youknowriad youknowriad merged commit 6d8fd43 into trunk Oct 21, 2025
42 of 43 checks passed
@youknowriad youknowriad deleted the fix/gutenberg-e2e-server-timing-mu-plugin branch October 21, 2025 15:46
@github-actions github-actions bot added this to the Gutenberg 22.0 milestone Oct 21, 2025
@westonruter westonruter mentioned this pull request Oct 21, 2025
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talldan pushed a commit that referenced this pull request Oct 22, 2025
@westonruter @youknowriad @talldan
Improve output buffer for sending server-timing header (#72536)
93e30b7 
Co-authored-by: westonruter <[email protected]>
Co-authored-by: youknowriad <[email protected]>
@talldan talldan removed the Backport to WP 6.9 Beta/RC Pull request that needs to be backported to the WordPress major release that's currently in beta label Oct 22, 2025
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talldan commented Oct 22, 2025

I've cherry-picked this manually onto the wp/6.9 branch.

ellatrix pushed a commit that referenced this pull request Oct 22, 2025
@westonruter @youknowriad @ellatrix
Improve output buffer for sending server-timing header (#72536)
bb45221 
Co-authored-by: westonruter <[email protected]>
Co-authored-by: youknowriad <[email protected]>
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