# Sidebar activation issues after recent Doc Categories update

**URL:** <https://meta.discourse.org/t/sidebar-activation-issues-after-recent-doc-categories-update/383888>\
**Category:** Bug\
**Tags:** doc-categories, horizon-theme, bug\
**Created:** [September 24, 2025, 2:03pm UTC](https://meta.discourse.org/t/sidebar-activation-issues-after-recent-doc-categories-update/383888 "2025-09-24T14:03:18Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![MachineScholar](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/machinescholar/32/424719_2.png) [@MachineScholar](https://meta.discourse.org/u/MachineScholar)\
**Post date:** [September 24, 2025, 2:03pm UTC](https://meta.discourse.org/t/sidebar-activation-issues-after-recent-doc-categories-update/383888/1 "2025-09-24T14:03:18Z")

</div>

As of these changes to [Doc Categories](https://meta.discourse.org/t/discourse-doc-categories/322376)

> **[Comparing...](https://github.com/discourse/discourse-doc-categories/compare/5f17b5920e3ccd8f604e5bad17186758710ee463...0e49fd13b29e2b90007445041933a970ae47ad02)**
>
> Contribute to discourse/discourse-doc-categories development by creating an account on GitHub.

the sidebar no longer activates. I am running version 3.6.0.beta1-dev ([17d735b3ad](https://github.com/discourse/discourse/commits/17d735b3ad34f5bcd42d2238a77236d36fd21cad)) with the Horizon theme, and there is nothing in the error logs. I also ensured there is a set index topic, rebuilt the launcher, and ran `bundle exec rake doc_categories:build_sidebar`.

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_[View the full topic](https://meta.discourse.org/t/sidebar-activation-issues-after-recent-doc-categories-update/383888)._