Symptoms
After Upgrading to K2 4.7 we are faced with several Document Set Issues, this includes getting the document set or updating the document if it has columns of type "person of group" or of type "managed metadata" and the column has value.
The workflows were working fine before version 4.7.
Also attached some screenshots and log from the previous ticket related to this problem.
Diagnoses
solution was applying a coldfix
Resolution
The respected custmer closed the ticket after applying the coldfix