In robot report, the updated duplicate_exact_synonym test does not display the values for the ?entity ?property ?value triples.
Examples:
Mondo OBO dashboard output - http://dashboard.obofoundry.org/dashboard/mondo/robot_report.html
DO using ROBOT 1.9.6

Note that this has a value for duplicate_label_synonym test.
Using the query at https://github.com/ontodev/robot/blob/master/robot-core/src/main/resources/report_queries/duplicate_exact_synonym.rq in robot query does include the values. In the test I did with DO, it also returned an additional row -- one class had synonyms matching two other classes, so that class appeared twice in the output that contained values and only once in the robot report output (in each case only distinct outputs were retained).