Issue confirmed.

I would like to fix this issue . Kindly guide where I can start from

I was able to reproduce it but not consistently. I figured out that the issue has something to do with the span#refresh-status in /administrator/components/com_languages/tmpl/override/edit.php
I'd like to contribute to this. Could you please assign it to me

@YatharthVyas you can make a pull request without an issue is assigned to you.

I figured out and solved the issue in my local version. I solved this by making the following change:

Original
#refresh-status.show { display: grid; }

Modified
#refresh-status.show { display: block; }

I will be adding a more detailed explanation behind why this caused the bug in my PR.

This change was made in my /media folder which is added to .gitignore because I believe it's contents are installed using npm ci and composer install commands.

So, where exactly do I put my modified css files so that it reflects in the PR?

The files modified are:
media/com_languages/css/overrider.min.css
media/com_languages/css/overrider.css
build/media_source/com_languages/css/overrider.css

See here

PR #33041. Thanks.