I have a very odd issue that is impossible to reproduce but I have it reported by customers pretty regular. They go through the checkout flow, enter their shipping address and select a shipping method and click next. The loader appears and before the page updates to the payment page you can see the shipping dropdown change. When landing on the payment page the shipping address is not the address the originally picked but instead reverts to their default shipping address. I have gone over and over with this issue and am unable to personally reproduce but have seen a video of it happening. I can't find any related or similar issues online and not sure where else to look. Comments are appreciated.