xfinity.com fails to load streaming options screen

Show the issue and provide steps to replicate.

website www.xfinity.com/stream/ will replicate the problem

website www.xfinity.com/stream/ will replicate the problem

It would be helpful if you post a screenshot of what you're seeing. Let me see...

Here's what I get. see screenshot Let me turn off a few things because Comcast is a painful site with Firefox. Just paying the bill I have to go into Troubleshoot mode to get it done.

I'm on Linux and no go for me. I opened a ticket on Github for this issue. https://webcompat.com/issues/166738 Let me go see what happens in Windows.

Works fine for me in Win11. see screenshot Did you try Troubleshoot Mode? https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#w_how-to-start-firefox-in-4troubleshoot-modesf5safe-modesf

The attached file shows the sequence of operations which used to work on Firefox (prior to last week) and presently works on Microsoft Edge.