Scroll bar are not visible in code editor pane in High contrast Desert and Aquatic mode.: A11y_MonacoEditor_Usability

[PoojaNamde]

GitHubTags:

#A11yTCS; #A11ySev4; #A11yUsable; #Desktopweb; #Win11; #Visual Studio Code Client; #VisualStudioCode-Web-Apr2021; #a11y-monacoeditor;

Environment Details:

#URL: Monaco Editor (microsoft.github.io)
Application name: Monaco Editor
Browser: Chromium Edge Version 132.0.2945.0 (Official build) dev (64-bit)
Windows 11 Enterprise (Version 23H2)  
OS build: 22631.4169

Repro Steps:

1. Hit the URL: https://microsoft.github.io/monaco-editor/playground.html?source=v0.40.0-dev.20230707#XQAAAAJzAQAAAAAAAABBqQkHQ5NjdMjwa-jY7SIQ9S7DNlzs5W-mwj0fe1ZCDRFc9ws9XQE0SJE1jc2VKxhaLFIw9vEWSxW3yscwzfibW_1uhs0-3YGTBOsVJ4S4FwfCDQb5-2uUHXTVAefbVSd9IzaZ_vv9VR9KugsKimARHSWlrTPOQHROITHxmAetfeRrm3VHdSe7_Etv6WpgzlH4vE8EOD3EPhJDl6tDpOO8RxKZbUytKns3T0NFFloo9Q21KsEBT298I6cyZc5-Glup9UHU6QTpv2Hjab6pZzB3ZO2RH-WGhzXse2-hNlgz6zCgsG8AjiqGg0ZzWzND7z09NmCQOQd6pfkNvO2zmMzFvHpTY8RFEy1urlQcQMb1HHLEESBi8m3Rr3UzFlKzY51hfYcz__QCePc.
2. TAB to Monaco editor.
3. Apply high contrast desert theme.
4. Observe the issue

Actual Results:

Scroll bar are not visible in code editor pane in High contrast Desert and Aquatic mode.

Expected Results:

Scroll bar should be visible in code editor pane in High contrast Desert and Aquatic mode.

User Impact:

Color blind users will not be able to see the scrollbars and might face difficulty to interact with editor.

Attachment:

4752_A11y_MonacoEditor_Usability.mp4