I've implemented a Sitecore 9 Forms Custom Submit Model referring to this article:
The only difference is, I am using Google ReCaptcha V3 instead of V2 (as in above article)
I have placed my Custom Model above the SaveData method in the Form Action:
Now the issue is - when I hit the submit button, it successfully validates the Captcha and submits the form and returns true. When I press F5 (while debugging in Visual Studio), it again hits the break-point I have placed same Custom Submit Model and this time the Captcha validation fails (with duplicate error)
Please point out, what exactly is wrong.