This is the second time I am experiencing this. When you 'Duplicate' a page the code on the page runs twice. Which means if I'm submitting a form, the form is inserted 2 times into the database and a confirmation email is sent twice.
Last time (when I did not raise this issue) the page was charging a credit card twice via Stripe (Live Environment) and creating 2 orders, I did not report this because there was more than 1500 lines of code and I thought it was my mistake somewhere but now I am sure this is a bug.
Can someone from the team please take a look at the page where it is occurring.