Actual Behavior

Everything works fine when the user is logged in, 400 Bad Request happens when I try to log the user in... same behavior is when I try to register a user (csrf_token is missing in the session when the user is anonymous)... have I missed something to configure maybe?

Note: We are not using the wtforms, we have our own custom scheme.

Thanks!

Environment

• Python version: Python 3.9.12
• wtforms version: Flask-WTF==1.0.1
• Flask version: Flask==2.0.3