{Linked:Bug33178108}While navigating onto the 'End of chat history' text in the new agent chat, Narrator announces an additional word "note" (End of chat history, note)

Is it an issue related to Adaptive Cards?

No.

What is the PWD impact?

When screen reader users navigate to the 'End of chat history' text in the new agent chat using Narrator, the announcement includes an unexpected and irrelevant word: “note”. This behavior introduces auditory noise and may cause confusion about whether there is additional context, annotation, or system feedback associated with the message.

What browsers and screen readers do this issue affect?

Windows: Edge with Windows Narrator

Are there any code-based customization done to Web Chat?

No, I am using Web Chat without any customizations except "styleOptions".

What version of Web Chat are you using?

Latest production

Which area does this issue affect?

Others or unrelated

What is the public URL for the website?

https://www.office.com/chat?auth=2

How to reproduce the issue?

1. Launch the application using the URL: https://www.office.com/chat?auth=2 and login using v-credentials.
2. Turn on Narrator or NVDA
3. "Microsoft Copilot" page appears on the screen.
4. TAB to "Create Agent" in the right panel and press ENTER.
5. "Copilot Studio" dialog appears on the screen.
6. TAB to "Describe" tab and press ENTER.
7. Send Agent name which want to create.
8. TAB to Agent section which newly appeared at right side.
9. Turn on screen reader.
10. TAB to 'End of the Chat history".
11. Observe while navigating onto the 'End of chat history' text in the new agent chat, Narrator announces an additional word "note" (End of chat history, note).

What do you expect?

While navigating onto the 'End of chat history' text in the new agent chat, Narrator should not announce additional word "note" (End of chat history, note)

What actually happened?

While navigating onto the 'End of chat history' text in the new agent chat, Narrator announces an additional word "note" (End of chat history, note)
Note: issue is reproducing on win32 app as well.

Do you have any screenshots or recordings to repro the issue?

No response

Did you find any DOM elements that might have caused the issue?

No response

MAS reference

https://aka.ms/MAS1.3.1

WCAG reference

No response

WAI-ARIA reference

No response

Adaptive Card JSON

Additional context

https://github.com/user-attachments/assets/a908b875-5266-4242-8f73-18060cdeb15e https://github.com/user-attachments/assets/3e00a937-bc9c-4e31-a5bc-e583cc57a765

https://github.com/user-attachments/assets/47a2bf17-5b36-4f05-a5a5-c7c4955cc350

Reproduce the announcement in the Microsoft Copilot and Copilot Studio flow at the provided URL using Windows Narrator or NVDA, following the listed navigation steps. Trace the rendered “End of chat history” element to identify why “note” is announced, then verify that the label is announced without the extra word in both the web and Win32 app contexts.