There is an issue with the checkout page. On the checkout page, when i fill the shipping address then select the shipping method and click on the next button it redirect to the payment page. But when i check in the database quote_address table i can see shipping method value is NULL, i can not see the selected shipping method. This issue is happening only some time. So, i can not track the exact issue.
and i back to the shipping step and select the shipping method again, then my shipping method saves into the database. Please check this video for the more idea.
Please help me to come out. Thanks.