Hi there,
It appears there is an issue when sending AMP templates where the HTML fallback template does not consistently have the placeholder replacement executed. I am sending a template where we embed a pixel tracker to notify us if the email is opened in AMP or in HTML. The AMP template works great but the HTML template does not get replaced. Here is the pixel after being sent, notice that not only was the event.extra.token not replaced but the default wasn’t used either meaning it was not processed at all.
