Forgot about the exact details, but I remember one occasion where I ran into an issue related to a Citrix environment and some strict settings for the webbrowser that caused a local redirect to fail. For the web sign in we had to link to another browser. Like I said, I don't know if it was Firefox causing the issue and Chrome providing the workaround or vice versa, but you could give it a shot.
Thanks. I could not find any 1:1 correspondence to any cases in history so all hints are welcome :)