# AI Bot PM replies stopped working on one multisite instance

**URL:** https://meta.discourse.org/t/ai-bot-pm-replies-stopped-working-on-one-multisite-instance/389909
**Category:** Support
**Tags:** chat, ai
**Created:** [November 28, 2025, 7:00pm UTC](https://meta.discourse.org/t/ai-bot-pm-replies-stopped-working-on-one-multisite-instance/389909 "2025-11-28T19:00:26Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![Naman\_Gala](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/naman_gala/32/485422_2.png) [@Naman\_Gala](https://meta.discourse.org/u/Naman_Gala)
#### Post date: [November 28, 2025, 7:00pm UTC](https://meta.discourse.org/t/ai-bot-pm-replies-stopped-working-on-one-multisite-instance/389909/1 "2025-11-28T19:00:26Z")

</div>

We’re running a hosted, multisite Discourse setup with two instances (eg X and Y) on the same environment.

On the X instance, clicking the AI chat icon on the homepage creates a proper AI conversation (`/discourse-ai/ai-bot/conversations/...`) and the AI responds normally.

On the Y instance, clicking the same AI chat icon now creates a regular topic (`/t/...`) instead, and no AI model name or bot responses appear. This previously worked on Y and stopped recently.

We’ve verified that:

- Both instances are on the same Discourse and discourse-ai versions

- Persona configuration, allowed groups, and models match

- Chat is enabled on both instances

In the database, we also see that new topics on Y are missing some AI-related topic custom fields that exist on the working instance (X).

We’re trying to understand what conditions control whether the AI chat creates a real AI conversation vs. a normal topic, and what could cause this behavior to regress on a single instance.

Has anyone seen similar behavior or have suggestions on what to check?

Thanks in advance.