2FA page sending "Location: https://my.site/users/undefined" header

[David Huseby]

For some reason, when logging in with Firefox, after the 2FA page, it redirects to the /users/unknown 404 page.  I was looking at the response from the gitlab-ce server and it is clearly sending a "Location: https://my.site/users/undefined" header.  When using Chrome, I see that it redirects to https://my.site/ which is correct.  Does anybody have any idea why Firefox is misbehaving?  Is there any code in gitlab-ce that is causing the redirect to be different for Firefox?

--dave

[Drew Blessing]

Hi David,

Is this happening when using the standard OTP two-factor (using a code generating app) or using the U2F implementation? What version of GitLab and Firefox? I cannot reproduce this on GitLab.com with Firefox 45.0.1