If you have not edited any engine or process model callbacks, the most likely reason that you would see this behavior is that you have unchecked the Step Failure Causes Sequence Failure
checkbox on this step. This option is found in the Step Settings
for the step in the Properties
tab under the Run Options
If you think that you may have edited an engine or process model callback, try looking in the Sequences pane for the callback that has been edited and check to make sure that the results list or sequence settings aren't being altered.