T30402-Fix_mapper_4D_multi_label
Summary: fixed T30402
Test Plan: code review, ui test
Reviewers: O1 MITK Reviewer Group I, O3 MITK Reviewer Group II, s434n
Reviewed By: O1 MITK Reviewer Group I, O3 MITK Reviewer Group II, s434n
Subscribers: s434n
Maniphest Tasks: T30402
Differential Revision: https://phabricator.mitk.org/D934