Navigated to the URL provided and observed the same behavior in Chrome and Firefox also.
Submitting the form with or without checking radio buttons is giving the same error message "CSRF verification failed. Request aborted."
@jpsyjoe63 -- Could you please let me know if i have missed anything and if possible could you please provide the screen cast of the issue which would help us triaging further.
Thanks in Advance.

The CSRF... error message is the expected behavior, it shows that the form was submitted and is a result of the JSFiddle environment. In our tests this happens in Firefox and IE but NOT in Chrome. Instead the browser validation acts as if the radio buttons would still be "required". See the attached screenshot.

This issue has also been confirmed by a member of the jQuery bug tracking team (we first reported there as we thought it would be a jQuery issue). See here: https://github.com/jquery/jquery/issues/3027 

I am amazed that you cannot reproduce it. We have it since Chrome 49 on all sorts of systems (OS X, Win 7, Win 10) that all worked flawlessly with 48.

Could you please check once more and make sure NOT to check any of the radio buttons before you submit? If you still get a different result, I will be happy to create a video cast of the problem.

Here is the better fiddle with a bit of JS in the form action (instead of a simple "#"), so it responds gracefully after a successful form submission:
https://jsfiddle.net/h71r5h4k/

Deleted: 2016-03-31 09_44_45-Edit fiddle - JSFiddle.png 12.0 KB

	2016-03-31 09_44_45-Edit fiddle - JSFiddle.png 12.0 KB View Download

Thank you for providing more feedback. Adding requester "msrchandra@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://sites.google.com/a/chromium.org/dev/issue-tracking/autotriage - Your friendly Sheriffbot

Verified the issue by navigating to the URL provided in Comment# 2 in Chrome# 49.0.2623.112 and Latest Canary# 51.0.2705.
Clicking on either YES or NO, able to submit the form successfully.

Seeing the same behavior on Firefox also.
@jpsyjoe63 -- Could you please let us know if I have missed anything.
Thanks in Advance.

It's not about clicking the "Yes" or "No" it's about not being able to remove the "required" state of the field with javascript after rendering.

So to reproduce: try to submit the form without clicking the radio field as this one should not be required, but in fact is still blocking the submission.

As said in Comment 5 and in my response in Comment 2:
"...make sure NOT to check any of the radio buttons before you submit!"

This is about the "required" state. 
Submission WITHOUT yes or no selection must be possible.

Thank you for providing more feedback. Adding requester "msrchandra@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://sites.google.com/a/chromium.org/dev/issue-tracking/autotriage - Your friendly Sheriffbot

@jpsyjoe63 -- As already mentioned in Comment#1, submitting the form without checking any raido buttons is displaying the same error message, "CSRF verification failed. Request aborted."
Verified on Latest Stable# 50.0.2661.87 and observed the same behavior.
Note: Seeing the same behavior on Firefox also.
Thank You.

Hi MSRCHANDRA,
you are correct. The problem has obviously been RESOLVED with version 50.

I rechecked with old and new versions of Chrome stable and the issue definitely appears with 49.0.2623.110 but does NOT happen with 50.0.2661.86.

So it can be marked as resolved.
Thanks for staying with us on this matter!

@msrchandra -- Report was started 1 month ago based on Chrome Version: 49.0 as stated.

So if you test it with an updated version it is of course possible that the issue has been fixed in the meantime.

Is fixed now in v50 but was present in v49.

Thanks for the update, based on the same in comment#11, closing the issue.

Thank you!