Inbound Processing code fails with an Encrypted Signature

The streaming inbound processing case fails on a message like the below (generated using the streaming code, with an Asymmetric Binding + sp:EncryptSignature):

BinarySecurityToken
EncryptedKey (ref BST above)
EncryptedData (encrypted Sig, ref EncryptedKey above)
BinarySecurityToken (referenced via the encrypted Signature)
(Encrypted/signed SOAP Body)

Error is:

java.lang.IllegalStateException: javax.xml.stream.XMLStreamException: org.apache.wss4j.common.ext.WSSecurityException: Referenced Token "G3618ed5a-e569-4fd6-af3b-6255353dd2b7" not found
at org.apache.xml.security.stax.impl.XMLSecurityStreamReader.getEventType(XMLSecurityStreamReader.java:386)

Can the Signature processing code not find a signing BST if it is after the Signature?