flask-security - duplicate current_user.uuid values

Question

I'm using FlaskBootStrapSecurity project which uses Flask Security. I have a situation where the flask.ext.security current_user has the same uuid for 2 users.

For example,

1. I log in with one user
2. print current_user.uuid
3. log out
4. log in with a different user
5. print current_user.uuid

and it is the same value for both users.

This occurs when I deploy to nginx but not when I run with python manage.py runserver.