backdrop-contrib · indigoxela · Sep 19, 2026 · Sep 19, 2026
diff --git a/libraries/tinymce/CHANGELOG.md b/libraries/tinymce/CHANGELOG.md
@@ -5,6 +5,19 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html),
 and is generated by [Changie](https://github.com/miniscruff/changie).
 
+## 8.9.1 - 2026-09-09
+
+## 8.9.0 - 2026-08-27
+
+### Improved
+- Sidebars can now be resized by dragging their edge, and their width can be configured with the new `sidebar_width` option. #TINYMCE-14527
+- The Help dialog's Plugins tab now lists all active plugins, including custom plugins, using metadata provided by each plugin. #TINYMCE-14650
+- The Help dialog's Plugins tab now lists plugins with invalid metadata as plain text. #TINYMCE-14730
+
+### Fixed
+- Image with empty `alt` text would add `role='presentation'` instead of adding `alt` text when updated. #TINYMCE-13738
+- Opening or closing sidebars from the toolbar no longer causes the editor to scroll to the cursor position. #TINYMCE-14765
+
 ## 8.8.2 - 2026-07-27
 
 ### Fixed

diff --git a/libraries/tinymce/js/tinymce/plugins/accordion/plugin.min.js b/libraries/tinymce/js/tinymce/plugins/accordion/plugin.min.js
diff --git a/libraries/tinymce/js/tinymce/plugins/advlist/plugin.min.js b/libraries/tinymce/js/tinymce/plugins/advlist/plugin.min.js
diff --git a/libraries/tinymce/js/tinymce/plugins/anchor/plugin.min.js b/libraries/tinymce/js/tinymce/plugins/anchor/plugin.min.js