Fix.

Author: andreimejov

src/js/charts/AxisChart.js

@@ -405,9 +405,9 @@ export default class AxisChart extends BaseChart {
 		if(!s.yExtremes) return;
 
 		let index = getClosestInArray(relX, s.xAxis.positions, true);
-
 		if (index >= 0) {
 			let dbi = this.dataByIndex[index];
+
 			this.tip.setValues(
 				dbi.xPos + this.tip.offset.x,
 				dbi.yExtreme + this.tip.offset.y,