fix karma fail

frontend/tests/unit/tests/work_packages/controllers/details-tab-overview-controller-test.js

@@ -488,6 +488,10 @@ describe('DetailsTabOverviewController', function() {
           buildController();
         });
 
+        afterEach(function() {
+          workPackage.props.customField1.raw = 'red';
+        });
+
         it('adds the custom property to empty properties', function() {
           expect(fetchEmptyPropertiesWithName(customPropertyName)).not.to.be.empty;
         });