Using Python/Flask hosted on Heroku (using SSL with some other additional security features) I'm having an issue where users using a proxy browser extension proxy (usually regular proxy servers that are on before the browser is open are fine) are causing missing CSRF token errors when users submit forms.
The only thing I can find online about this issue is https://nickjanetakis.com/blog/fix-missing-csrf-token-issues-with-flask but I can't mess with the config as referenced here.
Everything works fine if the proxy is on your machine (not a chrome web browser proxy).
Has anyone had this issue before? The only information I can find references if your server is on a proxy, not your user...
Thanks for your insights and help!