Inbuilt PDF Viewer is not working after updating jQuery to 3.6.0 from 1.3.2

[Surendra185660]

My company did not develop any plugins. They have developed a code that will detect the browser's inbuilt PDF viewer. If it is present in the browser, then it will use that plugin to display the content; otherwise, if the browser doesn't have one, it will download the file directly; this is the default behavior of our product and it will work even if I use a private window. But the problem here is that we have changed our jQuery version from 1.3.2 to the latest version of 3.6.0 which is preventing that plugin from displaying when it is in private mode. I want to know if this is an issue with the browser plugin or with jQuery itself.