Hi Amit:
As I said, this was an ongoing issue when a FrameMaker document with Jump Back (previouslink) was output to PDF. From memory, it was in Fm 2019 and 2020. Here is the report I filed in 2022 which was marked as fixed: https://tracker.adobe.com/#/view/FRMAKER-11900.
So, my first question is, where did you test it? In FrameMaker or in Acrobat? Oh, now I see that you are testing it with a 3rd party product in a browser window. Third-party applications don't always do things the way they are supposed to, and of course this is on them, and not on Adobe. I think your next step is to download Acrobat Reader, which is free and test the link there.
If it's still not working, then come back and let me know exactly how you're creating the PDF. The bug that I was referring to in my first response was definitely fixed. This is something different.
~Barb