invalid regex in userflow

[ducharmeb]

Hi, we use Azure AD B2C for authentication in an application. We don't use the custom policies, only the built-in userflows. We noticed that, when entering the email for the credentials, the console print an error saying

Pattern attribute valu "Uncaught SyntaxError: Invalid regular expression: ^[a-zA-Z0-9.!#$%&’'+/=?^_{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/v: Invalid character in character class is not a valid regular expression: Uncaught SyntaxError: Invalid regular expression: ^[a-zA-Z0-9.!#$%&’'*+/=?^_{|}~-]+@[a-zA-Z0-9-]+(?:.[a-zA-Z0-9-]+)$/v: Invalid character in character class

the error come from file named "authorize:1"

It is not our file, nor is the regex. To correct it I should replace the userflow by a custom policy, wich I would prefer not to do. Is there any way to correct it on microsoft side?