This issue was resolved on 4/27/2017 and doesn't require any updates to be applied by clients.

If your organization experienced this issue and has Address Validation then validating the impacted addresses will properly case the addresses.  In the event that your organization doesn't have Address Validation please complete the following steps:
  1. Resubmit the addresses for AddressFinder processing
  2. Email and include the following:
    • Your organizations Site ID
    • Your organizations name
    • The number of addresses resubmitted
    • Reference this Knowledgebase article