added test

test/fixtures/core.interaction/drawActiveElementsOnTop-false.js

@@ -0,0 +1,34 @@
+module.exports = {
+    config: {
+      type: 'bubble',
+      data: {
+        datasets: [{
+          data: [
+            { x: 1, y: 1, r: 80 },
+            { x: 1, y: 1, r: 20 }
+          ],
+          drawActiveElementsOnTop: false,
+          backgroundColor: (ctx) => (ctx.dataIndex === 1 ? "red" : "blue"),
+          hoverBackgroundColor: "yellow",
+          hoverRadius: 0,
+        }]
+      },
+      options: {
+        plugins: {
+          tooltip: false,
+          legend: false
+        },
+      }
+    },
+    options: {
+      canvas: {
+        width: 600,
+        height: 400
+      },
+      async run(chart) {
+        const point = chart.getDatasetMeta(0).data[0];
+        await jasmine.triggerMouseEvent(chart, 'click', {y: point.y, x: point.x + 25});
+      }
+    }
+  };
+