SubjectConfirmationData mismatch - SAMLRequests generated within seconds of each other

There are cases where the instance will generate two SAMLRequests like the following example from the logs:

13:25:40.687 Info Default-thread-217 39C6B82B13B41A008799BDA12244B0ED *** Script: SAML Request xml: AssertionConsumerServiceURL="https://<instance-name>.service-now.com/navpage.do"
Destination="https://<your-adfs-server>/adfs/ls/" ForceAuthn="false"
ID="SNCba82f60ab03bb2434969233d9088d611" IsPassive="false" 
IssueInstant="2016-01-12T21:25:40.673Z"
ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST"
ProviderName="https://<instance-name>.service-now.com/navpage.do" Version="2.0">https://<instance-name>.service-now.com
13:25:40.765 Info Default-thread-217 39C6B82B13B41A008799BDA12244B0ED *** Script: SAML Request xml: AssertionConsumerServiceURL="https://<instance-name>.service-now.com/navpage.do"
Destination="https://<your-adfs-server>/adfs/ls/" ForceAuthn="false"
ID="SNCe2ea5b24ffafe346357625c534776af1" IsPassive="false"
IssueInstant="2016-01-12T21:25:40.750Z"
ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST"
ProviderName="https://<instance-name>.service-now.com/navpage.do" Version="2.0">https://<instance-name>.service-now.comFormat="urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress"/>

The login requests are for the same session and note the timestamps. The SAMLResponse includes the following error:

13:25:40.956 Error Default-thread-221 39C6B82B13B41A008799BDA12244B0ED SEVERE *** ERROR *** SAML2: SAML2ValidationError: InResponseTo attribute in SubjectConfirmationData mismatch.

We stored the second ID "SNCe2ea5b24ffafe346357625c534776af1" but we get the SAMLResponse of the first, ""SNCba82f60ab03bb2434969233d9088d611"

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