I have had issues after filling out my FCC public profile.
Test Settings: Windows 7 Firefox 32 bit
Bug Trigger: Filled out profile fields. Profile fields include Username(path to public profile), Twitter, Github, CoderByte, and LinkedIn.
Bug Description:
Avatar picture will not display.
Cannot login.
Cannot login even after resetting password.
Cannot edit Profile after first profile edit.
Bug Reproduction:
Could not reproduce with a secondary test account, bug only found with Nguyench@live.com.

Link with google, attached video of the bug.
https://drive.google.com/file/d/0B-94cRSEUQu_YkdvTTlaWEM4UGs/view?usp=sharing