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AdminPage: keep header-height rule matching on admin-ui 2.1#49101

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dhasilva merged 1 commit into
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fix/admin-page-header-height-admin-ui-2-1
May 22, 2026
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AdminPage: keep header-height rule matching on admin-ui 2.1#49101
dhasilva merged 1 commit into
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fix/admin-page-header-height-admin-ui-2-1

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@dhasilva
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Fixes #

Follow-up to #49080 (consistent AdminPage header height) which regressed against #49018.

Proposed changes

Related product discussion/links

Does this pull request change what data or activity we track or use?

No.

Testing instructions

  • wp-build consumes jetpack-components from its build/ output, so rebuild that package first, then the dashboards:
    • pnpm --filter @automattic/jetpack-components build
    • pnpm --filter @automattic/jetpack-newsletter build:wp-build and pnpm --filter @automattic/jetpack-videopress build:wp-build
  • On Newsletter (wp-admin/admin.php?page=jetpack-newsletter), switch between Subscribers and Settings. Confirm the tab strip stays at the same vertical position (the header no longer grows/shrinks).
  • On VideoPress (wp-admin/admin.php?page=jetpack-videopress), switch between Overview, Library, and Settings. Confirm the same — verifying the change also holds on the still-2.0.0-pinned VideoPress (<header>) consumer.
  • Confirm the header still looks correct (logo, title, subtitle, any action control aligned) on every tab, including tabs with no action control.

The consistent-header-height rule from #49080 still selected the page
header via `> header`, but admin-ui 2.1 (#49018) renders it as a `<div>`,
so the selector matched nothing and the tab strip began shifting again on
admin-ui 2.1 consumers (Newsletter). Switch to `> :first-child`, matching
the sibling header-normalization rules — it targets the header
positionally and works for both admin-ui 2.0's `<header>` and 2.1's
`<div>`.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
@dhasilva dhasilva added the [Status] Needs Review This PR is ready for review. label May 22, 2026
@dhasilva dhasilva self-assigned this May 22, 2026
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github-actions Bot commented May 22, 2026

Are you an Automattician? Please test your changes on all WordPress.com environments to help mitigate accidental explosions.

  • To test on WoA, go to the Plugins menu on a WoA dev site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin (Jetpack or WordPress.com Site Helper), and enable the fix/admin-page-header-height-admin-ui-2-1 branch.
  • To test on Simple, run the following command on your sandbox:
bin/jetpack-downloader test jetpack fix/admin-page-header-height-admin-ui-2-1
bin/jetpack-downloader test jetpack-mu-wpcom-plugin fix/admin-page-header-height-admin-ui-2-1

Interested in more tips and information?

  • In your local development environment, use the jetpack rsync command to sync your changes to a WoA dev blog.
  • Read more about our development workflow here: PCYsg-eg0-p2
  • Figure out when your changes will be shipped to customers here: PCYsg-eg5-p2

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Thank you for your PR!

When contributing to Jetpack, we have a few suggestions that can help us test and review your patch:

  • ✅ Include a description of your PR changes.
  • ✅ Add a "[Status]" label (In Progress, Needs Review, ...).
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This comment will be updated as you work on your PR and make changes. If you think that some of those checks are not needed for your PR, please explain why you think so. Thanks for cooperation 🤖


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If you have questions about anything, reach out in #jetpack-developers for guidance!

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Code Coverage Summary

This PR did not change code coverage!

That could be good or bad, depending on the situation. Everything covered before, and still is? Great! Nothing was covered before? Not so great. 🤷

Full summary · PHP report · JS report

@dhasilva dhasilva merged commit b8e8110 into trunk May 22, 2026
89 of 93 checks passed
@dhasilva dhasilva deleted the fix/admin-page-header-height-admin-ui-2-1 branch May 22, 2026 15:51
@github-actions github-actions Bot removed the [Status] Needs Review This PR is ready for review. label May 22, 2026
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