[Fluent UI -Suggested actions]: Keyboard focus is not visible on 'Previous and Next' icons while navigating with tab key.

Is it an issue related to Adaptive Cards?

No response

What is the PWD impact?

Keyboard‑only users may not know which control currently has focus. This makes it difficult to navigate the interface, interact with controls confidently, and complete actions efficiently. Users with low vision or motor disabilities are especially impacted.

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?

Keyboard navigation

What is the public URL for the website?

No response

How to reproduce the issue?

Repro Steps

1. Open URL: https://compulim.github.io/webchat-loader/ and sign in using valid credentials.
2. Navigate to web chat page and select 4.18.1-main.20240927.ea7a875 (30/9/2024) version and then select mockBot link under present label and then select open web chat in new window link at bottom.
   3.Navigate to Fluent UI experience chat page and type Suggested-actions word in type your message text box.
3. Response will appear.
4. Navigate to the Next and Previous control.
5. Observe an issue that Keyboard focus is not visible on 'Previous and Next' icons while navigating with tab key.

What do you expect?

The element should provide a clear, visible focus indicator when navigated to using the keyboard.

What actually happened?

Keyboard focus is not visible on 'Previous and Next' icons while navigating with tab key.

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

https://github.com/user-attachments/assets/0d9b6381-396f-4a58-8c10-ecb013358a87

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

No response

MAS reference

No response

WCAG reference

https://www.w3.org/WAI/WCAG21/Understanding/focus-visible

WAI-ARIA reference

No response

Adaptive Card JSON

Additional context

No response

Start with the Fluent UI experience in the Web Chat loader URL and reproduce the issue by tabbing to the Suggested actions Previous and Next controls. Inspect those controls while using Edge and Windows Narrator, then verify that both show a clear visible keyboard-focus indicator when the issue is fixed.