Even if I use Defaults, it does the same. I even tried it with Local Delivery too. Same thing, but the moment I enable more than one Shipping Method and more than one Payment method, it works fine.
1 Payment method + 1 Shipping Method = Problem
2 Payment Methods + 2 Shipping Methods = No Issue
1 Payment method + 1 Shipping Method = Problem
2 Payment Methods + 2 Shipping Methods = No Issue