http://valinet6l6tq6d5yohaa6gdsf2ho4qcqcxyj2nahp5kd4z7nsa6ycdqd.onion/2021/04/10/Open-SharePoint-files-in-client-apps-directly-in-modern-browsers.html
As far as I have noticed, visual changes include slight CSS tweaks, like bolding selected items in the navigation bars, while regarding the functionality I was looking for, it now made Chrome and non-IE browsers pop up messages asking whether I’d like to open Office files in the client applications, like it does in IE. PDFs still no luck, but nevertheless an improvement.