A11y_Chat window_HighContrast:Cross button is not visible in desert HC mode.

[compulim]

Is it an issue related to Adaptive Cards?

No.

What is the PWD impact?

Users viewing the page in HC mode will face difficulties.

What browsers and screen readers do this issue affect?

Windows: Edge with Windows Narrator, Windows: Chrome with NVDA, Windows: Chrome/Firefox with JAWS

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?

Contrast ratio, Forced colors (high contrast mode)

What is the public URL for the website?

https://web.powerva.microsoft.com/environments/839eace6-59ab-4243-97ec-a5b8fcc104e4/bots/107725f1-d827-41a4-8375-c91d1a97affc

How to reproduce the issue?

Pre-Requisite:
Set Contrast theme to desert theme.

1. Launch the application using URL: Home - Test | Power Virtual Agents (microsoft.com)
2. Tab till chat box and press enter to open it.
3. Press tab key to navigate to cross button.

What do you expect?

Cross button should be clearly visible in HC mode.

What actually happened?

Cross button is not visible in desert HC mode.

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

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

No response

MAS reference

https://aka.ms/MAS4.3.1

WCAG reference

No response

WAI-ARIA reference

No response

Adaptive Card JSON

No response

Additional context

The color use in SVG should be a CSS system color of "text color"