Cloudflare strips external domains from form action attribute?

Hey guys, I am running into a problem with HTML forms. On a form action with an external link like so:
<form method="POST" action="https://buttondown.email/api/emails/">
In production the
action
is being stripped like so:
<form method="POST">
I have tested my static site locally and it maintains the action but in Cloudflare Page it strips it. Is there a configuration setting in Cloudflare that is stripping this form action?
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