Question:

An Approval Workflow is launched. The document is rejected at the end of the workflow. The user has an approval signature appearing on the document. Short-circuit is not in use.  Why is the workflow rejected?

Answer:

The document is rejected, one Approver Approved the document. 
If the manifest eSignature on the Approval Workflow is selected within an Approve Verdict, Vault creates an eSignature if the workflow is rejected. This is working as designed.

Related Documentation:

 N/A