diff --git a/tests/unit/datepicker/datepicker_core.js b/tests/unit/datepicker/datepicker_core.js
index 65b07e2f6ca..36a6166c980 100644
--- a/tests/unit/datepicker/datepicker_core.js
+++ b/tests/unit/datepicker/datepicker_core.js
@@ -525,4 +525,32 @@ test("mouse", function() {
 		"Mouse click inline - next");
 });
 
+asyncTest( "8556: flashes when moving between two fields", function() {
+	expect( 1 );
+
+	var datepicker1 = $( "<input>" ),
+		datepicker2 = $( "<input>" );
+	datepicker1.appendTo( "body" );
+	datepicker2.appendTo( "body" );
+
+	datepicker1.datepicker({
+		onSelect: function () {
+			datepicker2.datepicker( "show" );
+		},
+		duration: 0
+	});
+	datepicker2.datepicker({ duration: 0});
+	datepicker1.datepicker( "show" );
+	$( "td.ui-datepicker-today a" ).trigger( "click" );
+	setTimeout(function() {
+		ok( $( "#ui-datepicker-div" ).is( ":visible" ), "second calendar is not hidden" );
+		datepicker1.datepicker( "destroy" );
+		datepicker2.datepicker( "destroy" );
+		datepicker1.remove();
+		datepicker2.remove();
+		// Needed for "widget method - empty collection" test
+		$( "#ui-datepicker-div" ).remove();
+		start();
+	});
+});
 })(jQuery);
diff --git a/ui/datepicker.js b/ui/datepicker.js
index 7de51bc924d..547adf77e84 100644
--- a/ui/datepicker.js
+++ b/ui/datepicker.js
@@ -1019,7 +1019,9 @@ $.extend(Datepicker.prototype, {
 	_selectDate: function(id, dateStr) {
 		var onSelect,
 			target = $(id),
-			inst = this._getInst(target[0]);
+			inst = this._getInst(target[0]),
+			currentInst = null,
+			nextInst = null;
 
 		dateStr = (dateStr != null ? dateStr : this._formatDate(inst));
 		if (inst.input) {
@@ -1028,8 +1030,10 @@ $.extend(Datepicker.prototype, {
 		this._updateAlternate(inst);
 
 		onSelect = this._get(inst, "onSelect");
+		currentInst = inst;
 		if (onSelect) {
 			onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]);  // trigger custom callback
+			nextInst = this._curInst;
 		} else if (inst.input) {
 			inst.input.trigger("change"); // fire the change event
 		}
@@ -1037,7 +1041,9 @@ $.extend(Datepicker.prototype, {
 		if (inst.inline){
 			this._updateDatepicker(inst);
 		} else {
-			this._hideDatepicker();
+			if (!nextInst || nextInst === currentInst) {
+				this._hideDatepicker();
+			}
 			this._lastInput = inst.input[0];
 			if (typeof(inst.input[0]) !== "object") {
 				inst.input.focus(); // restore focus