I have a few pages (order and event selector, event registration form) and admin set to https. Rest are http.
My order page opens using https and it submits the order form as POST data to itself for processing.
As per my browser's network tab, the page redirects twice - after form submission - the first one to https://.../order and then again to the same with 301 moved permanently. Hence, all the post data is getting lost in this case and I am unable to process this data. My site remains broken.