After upgrading to 2.1.7, getting a Braintree error while processing an order through admin panel

[lookinglavish]

After upgrading to 2.1.7, getting a Braintree error "Transaction has been declined. Please try again later" while processing an order through admin panel (back end)...however when the customer orders through the website (front end) there is no error. Not sure why this is happening.

After troubleshooting for awhile, I noticed after turning off all AVS rules in Braintree's admin section the problem stopped. Not sure what is causing this problem. Any help would be much appreciated!

Thank you!

[lookinglavish]

Here is a follow up from my post...

Braintree response to my issue:

Jun 26 17:25:29 [VALIDATION ERRORS] 91508 (Cannot determine payment method.)

Validation error 91508 indicates that a payment method is not being specified. Based on what I can see in our logs, it looks as though your server is not passing a payment method nonce to Braintree when you create transactions.

[InDzine2]

I am getting this issue placing orders in the back end, did you find a resolution?