modules/controls/src/main/java/javafx/scene/control/skin/SplitPaneSkin.java

@@ -1187,14 +1187,14 @@
             clipRect.setWidth(w);
             clipRect.setHeight(h);
         }
 
         @Override protected double computeMaxWidth(double height) {
-            return snapSize(content.maxWidth(height));
+            return snapSizeX(content.maxWidth(height));
         }
 
         @Override protected double computeMaxHeight(double width) {
-            return snapSize(content.maxHeight(width));
+            return snapSizeY(content.maxHeight(width));
         }
     }
 }