I don't know if this is a system wide iOS issue or something specific to Firefox, but I'm not able to disable link preview when long pressing a link. I was able to disable it in Safari which also disabled it in iMessage, but link previews are still showing up in Firefox and Firefox Focus. It's very surprising for a browser focused on privacy and security. I should not have to make a connection to another server in order to see the URL behind a link. Automatically downloading from an unknown URL opens my device up to zero day exploits and privacy violations. Does anyone know how to disable this completely or submit a bug report to Firefox?