I'm dealing with an instance where a Marketo form stops redirecting to confirmation/thank you page once that form had already been submitted once (by browser instance). Instead, the submitted form fields are being appended to the landing page URL.
Does anyone know how to fix this? Adding a cookie time out?
This question would get a lot more visibility in our Products and Support, can you please move it there by clicking 'move' on the ride side of your post?