Would you be able to provide the full URL of the initial request?
Trying to find a way to reproduce this issue.
Thanks,
Marius
Thanks for reporting this problem and for providing all the details.
Regarding the 414 error, an issue was identified and we are actively
working on a fix. The problem seems to occur only with 2-factor
enabled accounts.
I am still investigating why did your request end up at YouTube, will
get back on that regard.
Thanks,
Marius
Are these accounts strong auth enabled? Does the user get a chance to
authenticate? Can you describe exactly what pages is the user seeing?
Do you have an account that reproduces this consistently? If yes,
please email me directly the account name (email address).
Thanks,
Marius