[White Label - Layout Carousal]: Keyboard focus indicator is not visible on "previous" and "next" button.

Is it an issue related to Adaptive Cards?

No.

What is the PWD impact?

Without a visible keyboard focus indicator on the “Previous” and “Next” buttons, keyboard-only users cannot determine which element is currently selected, making navigation confusing and potentially preventing task completion.

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 focus indicator

What is the public URL for the website?

No response

How to reproduce the issue?

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 white label experience chat page and type Layout carousel word in type your message text box.
   4.Navigate on the result on "previous" and "next".
   5.Observe that Keyboard focus indicator is not visible on "previous" and "next" button.

What do you expect?

The “Previous” and “Next” buttons should display a visible keyboard focus indicator when selected, allowing keyboard-only users to clearly see which element is active during navigation.

What actually happened?

Keyboard focus indicator is not visible on "previous" and "next" button.

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

https://github.com/user-attachments/assets/1e28e3dc-07a4-4d5d-9550-e3a2405ff92a

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 by reproducing the issue through the linked Web Chat loader, using the white label experience and Layout carousel with keyboard navigation. Inspect the Previous and Next buttons and verify the completed change in Edge with Windows Narrator by confirming that the focused button has a visible indicator.