Reproducer based on optaplanner unit tests:
@Test
public void getPlanningValues() {
TestdataValue v1 = new TestdataValue("1");
TestdataValue v2 = new TestdataValue("2");
TestdataValue v3 = new TestdataValue("3");

TestdataMultiVarEntity a = new TestdataMultiVarEntity("a", v1, v2, null);
TestdataMultiVarEntity b = new TestdataMultiVarEntity("b", v1, v3, null);

EntityDescriptor entityDescriptor = TestdataMultiVarEntity.buildEntityDescriptor();
SwapMove move = new SwapMove(entityDescriptor.getGenuineVariableDescriptors(), a, b);

List<Object> values = (List<Object>) move.getPlanningValues();
}

Actual results: "values" array contains

, where "1" is redundant.

Expected results: shoudl contains only

Additional info: This issue corresponds with bigger problem: https://issues.jboss.org/browse/PLANNER-278