fix missing scatter point on category plots

xchart/src/main/java/org/knowm/xchart/CategoryChart.java

@@ -276,6 +276,12 @@ public class CategoryChart extends Chart<CategoryStyler, CategorySeries> {
       if (series.getFillColor() == null) { // wasn't set manually
         series.setFillColor(seriesColorMarkerLineStyle.getColor());
       }
+      if (series.getMarker() == null) { // wasn't set manually
+        series.setMarker(seriesColorMarkerLineStyle.getMarker());
+      }
+      if (series.getMarkerColor() == null) { // wasn't set manually
+        series.setMarkerColor(seriesColorMarkerLineStyle.getColor());
+      }
     }
   }
 

xchart/src/main/java/org/knowm/xchart/internal/chartpart/PlotContent_Category_Bar.java

@@ -239,7 +239,6 @@ public class PlotContent_Category_Bar<ST extends Styler, S extends Series> exten
           }
 
           // paint marker
-          // if (series.getMarker() != null) {
           if (series.getMarker() != null) {
             g.setColor(series.getMarkerColor());
 
@@ -266,6 +265,7 @@ public class PlotContent_Category_Bar<ST extends Styler, S extends Series> exten
               }
             }
           }
+
           previousX = xOffset + barWidth / 2;
           previousY = yOffset;