Vertical tabs are displayed incorrectly in Forced Colors mode

@roller, I tried to reproduce this issue in my local environment but couldn't succeed. I've attached a screenshot—can you check and let me know if I'm missing any theme settings?

I am working on it.

@rahuly072 your theme settings are ok, but you also have to active the forced colors mode. your screenshots show that you are just in dark mode. you have to activate forced colors mode either in your operating system in case you are on windows or in chromium based browsers https://devtoolstips.org/tips/en/emulate-forced-colors/

@rahuly072 Let me know if this helps you replicate the problem:
https://www.lambdatest.com/blog/windows-high-contrast-mode/

Thanks for the suggestion, @rkoller and @mgifford. I have replicated this issue in my local environment.
@utkarsh_kumar_singh, are you currently working on this?

Hi,
Applied MR !582 on drupal 11.x version and it is working as expected.

Testing Steps:
1. Set up Gin Admin theme on my local
2. Switch to the dark mode
3. Activate the Forced Colors mode, and then go to admin/config/content/formats/manage/content_format?destination=/admin/config/content/formats and observed the changes there.

Testing Result:
After applying the patch the Vertical tabs are being displayed correctly in Forced Colors mode. Attached screenshots for reference. Moving this issue to RTBC+1

Status : PASS