For those coming here looking for a solution, here is what we ended up doing as a workaround until this is solved on Authorize.net's end. (@mbruxvoort is my supervisor)
We ended up adding a setting in our admin dashboard for a payment delay. Then in our javascript response callback handler we just did a simple setTimeout that waits based on the payment delay setting before submitting the form.
Something like this:
setTimeout(function() {
authorizeNetPaymentForm.submit();
}, paymentDelay);
This is really hacky, but without much of an alternative, it is the best we can do.
After this code was in place we tried different delay lengths (1, 2, 5, 10 seconds). The only one that worked was 10 seconds. This means that we are making our users wait 10 seconds for authorize.net to replicate the nonce data. This is really unfortunate as we recently spent time making the payment process as quick as possible.
