Just upgraded to 3.8.14. I have been reading the issues about the state field not being included after upgrading (which mine wasn't) I added it back and that seems to work fine now. However I have "Allow shipping same as billing" is enabled but it does not work. when I fill out the billing fields then click the check box and when I go to click the "Shipping same as Billing Address" check box both sets of filed disappear off the checkout form.
Also, here is some feedback from users of the site about the checkout form. There are so many things that just don't' work as most users expect such as if you have a fixed shipping amount why do you force the user to pick a country and or country/state when you are collecting this info in the billing address already? it's double work for them. Also the flow of the form is very confusing for most users. This is the feedback I have been receiving from my client's users and wanted to pass it on.