Bot Service: Inconsistent Answers During Conversation — Issue with Unrelated Replies

Problem description

I am experiencing an issue where my Azure Bot Service-backed website chatbot is providing answers that are unrelated to the user's questions. The problem started around September 30, 2026, and involved multiple conversations where the bot's responses did not match the queries.

Environment

The affected environment involves an Azure Bot Service using a Web App Bot resource located in Sweden Central. The bot operates through a public website chatbot on selfservice.quooker.dk, calling the Azure OpenAI Chat Completions API. The deployment is named gpt-5.2-chat, with the model gpt-chat-latest version 2026-05-05, and the resource resource name is quooker-selfservice-ai.

What I've already tried

Based on the available case information, I have not performed any troubleshooting steps myself. The support case mentions a limited troubleshooting history, with no documented manual tests, configuration changes, or reproduction steps, and the most recent diagnostics indicate some recent requests were rejected as Unauthorized, which may relate to authentication issues.

Current status

Currently, I am seeking assistance to determine whether this behavior is a known issue with the specified deployment and to understand if recent authentication failures are related. I would like guidance on further troubleshooting steps, including confirming if the problem occurs in Test in Web Chat and analyzing request logs to identify the cause of unrelated answers.