Fixed behavior when refreshing mobile races view

java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/home/mobile/partials/regattacompetition/RegattaCompetition.java

@@ -30,6 +30,7 @@ public class RegattaCompetition extends Composite implements RefreshableWidget<L
     
     @Override
     public void setData(ListResult<RaceCompetitionFormatSeriesDTO> data) {
+        regattaSeriesContainerUi.clear(); 
         for (RaceCompetitionFormatSeriesDTO series : data.getValues()) {
             RegattaCompetitionSeries regattaCompetitionSeries = new RegattaCompetitionSeries(series);
             int fleetCount = series.getFleets().size();