highcharts-issue-1347.patch

diff --git a/js/parts/Scroller.js b/js/parts/Scroller.js
index c96ae0a..4a3515f 100644
--- a/js/parts/Scroller.js
+++ b/js/parts/Scroller.js
@@ -867,13 +867,20 @@ Navigator.prototype = {
 			baseDataMin = baseExtremes.dataMin,
 			baseDataMax = baseExtremes.dataMax,
 			range = baseMax - baseMin,
-			stickToMin = this.stickToMin,
-			stickToMax = this.stickToMax,
+			stickToMin,
+			stickToMax,
 			newMax,
 			newMin,
 			navigatorSeries = this.series,
 			hasSetExtremes = !!baseXAxis.setExtremes;
 
+		// Detect whether the zoomed area should stick to the minimum or maximum. If the current
+		// axis minimum falls outside the new updated dataset, we must adjust.
+		stickToMin = baseSeries.xAxis.min <= baseSeries.xData[0];
+		// If the scrollbar is scrolled all the way to the right, keep right as new data 
+		// comes in.
+		stickToMax = this.zoomedMax >= this.navigatorWidth;
+
 		// If the zoomed range is already at the min, move it to the right as new data
 		// comes in
 		if (stickToMin) {
@@ -897,9 +904,6 @@ Navigator.prototype = {
 				baseXAxis.max = baseXAxis.userMax = newMax;
 			}
 		}
-
-		// Reset
-		this.stickToMin = this.stickToMax = null;
 	},
 
 	/**
@@ -912,13 +916,6 @@ Navigator.prototype = {
 			baseSeries = scroller.baseSeries,
 			navigatorSeries = scroller.series;
 
-		// Detect whether the zoomed area should stick to the minimum or maximum. If the current
-		// axis minimum falls outside the new updated dataset, we must adjust.
-		scroller.stickToMin = baseSeries.xAxis.min <= baseSeries.xData[0];
-		// If the scrollbar is scrolled all the way to the right, keep right as new data 
-		// comes in.
-		scroller.stickToMax = scroller.zoomedMax >= scroller.navigatorWidth;
-
 		// Set the navigator series data to the new data of the base series
 		if (navigatorSeries && !scroller.hasNavigatorData) {
 			navigatorSeries.options.pointStart = baseSeries.xData[0];