iOS Safari Form Submit Reloads Page

Having an absolutely bizarre issue this morning. I have a site (https://dds.taxi) that is running fine on desktop (all browsers) and iOS Chrome. But when using iOS Safari, any form submits just reload the same page and not to the proper controller. Like I said, it works fine in all other browsers. I am absolutely at a loss as to what to even look for! I have checked the source code in iOS Safari and the form tag is correct. This has been verified on multiple iOS devices.
Help! Point me in the right direction.