This update has created a strange issue for me where, when not in Firefox, clicking any http link opens up Calibre (the ebook library application), even though Firefox is still set as my web browser in “Default applications”. In one case, it failed to open Calibre at all, showing the error “Unknown host kate-editor.org: Host not found”. I have attached some videos which demonstrate this.
https://imgur.com/a/n9ybZKj (had to monospace this to stop Discourse from showing a single video rather than the whole album)
From my perspective, all I’ve done is pamac upgrade . If there are any relevant logs or terminal outputs I can provide, don’t hesitate to ask!
This is probably due to the deprecation of http links in Firefox. You may have to re-enable them in Firefox itself, if this is still supported ─ it should be, because loads of people have routers that don’t support https.