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The Backdrop community is proud to release version 1.35.0 of Backdrop CMS, following our 4-month release cycle. This release implements our most-requested core feature: Field Groups! Thank you to the Backdrop CMS community for the incredible work in this release!

Notes for updating

No changes have been made to the .htaccess, robots.txt or default settings.php files in this release. Updating customized versions of those files is not necessary.

It will be necessary to run the update script (located at /core/update.php) for this release.

Changes since version 1.34.4

New Features

  • Issue #6865: Field group functionality in core.
  • Issue #2054: Lock the aspect ratio resizing images in the editor dialog.
  • Issue #4914: Add Anchor Button to CKEditor.
  • Issue #6067: Provide an option to globally disable the personal contact forms, and make it the default for new installations.
  • Issue #7027: Allow the "Create exposed form block" setting for embed displays.
  • Issue #7069: Views Time Ago not calculating dates "ago" correctly for longer time spans.
  • Issue #7173: Provide a way to keep the original timestamp when using file_save(), use it in file classification batch.
  • Issue #7190: Update CKEditor 5 to version 48.4.0

Changes since version 1.34.3

If upgrading directly from 1.34.3 (also released today) 1.35.0 also includes the following additional changes that were included in 1.34.4.

Tasks

  • Issue #7189: Switch to a newer MariaDB version in Simpletest workflow runs

Documentation

  • Issue #7183: Document hook_ckeditor5_config_alter()

Bug Fixes

  • Issue #7192: Remove three duplicate array keys in core that silently discarded earlier values
  • Issue #7187: Remove Simpletest cache tables on uninstall
  • Issue #7179: Stop exposing Backdrop and other version numbers in page source when JavaScript aggregation is off
  • Issue #7178: Prevent PHP warnings in file_managed_file_browser_open() when a managed_file element has no #field_name
  • Issue #7170: Fix misleading last updated date in the Project browser dialog
  • Issue #7169: Fix error when deleting files referenced in paragraphs
  • Issue #7162: Add missing #comment-form anchor to "Reply to comment" links
  • Issue #3888: Remove the menu item when the Dashboard layout or module is disabled
  • Issue #7195: Fix Page Not Found after disabling and re-enabling the Dashboard module
  • Issue #7050: Increase the name column of the users table to 254 characters
Source: README.md, updated 2026-09-15