Unexpected error when "canceling" MFA

I don't know if it's a new bug regarding the MacOS backend rewrite or old one, but I have this with thew new client:

https://github.com/user-attachments/assets/24f7e5db-a393-4ad4-a855-1e162cfaaab0

1. Connect to MFA location
2. Choose Mobile Client
3. Cancel / close window