diff --git a/ui/autocomplete.js b/ui/autocomplete.js
index 209fa71ae99..b9675f30764 100644
--- a/ui/autocomplete.js
+++ b/ui/autocomplete.js
@@ -365,7 +365,7 @@ $.widget( "ui.autocomplete", {
 		}
 
 		if ( !element || !element[ 0 ] ) {
-			element = this.element.closest( ".ui-front" );
+			element = this.element.closest( ".ui-front,dialog" );
 		}
 
 		if ( !element.length ) {
diff --git a/ui/selectmenu.js b/ui/selectmenu.js
index 74e142d33d4..10c32417b10 100644
--- a/ui/selectmenu.js
+++ b/ui/selectmenu.js
@@ -586,7 +586,7 @@ return $.widget( "ui.selectmenu", {
 		}
 
 		if ( !element || !element[ 0 ] ) {
-			element = this.element.closest( ".ui-front" );
+			element = this.element.closest( ".ui-front,dialog" );
 		}
 
 		if ( !element.length ) {
diff --git a/ui/tooltip.js b/ui/tooltip.js
index ae10177223b..d26465e8bc4 100644
--- a/ui/tooltip.js
+++ b/ui/tooltip.js
@@ -428,7 +428,7 @@ $.widget( "ui.tooltip", {
 		this._addClass( content, "ui-tooltip-content" );
 		this._addClass( tooltip, "ui-tooltip", "ui-widget ui-widget-content" );
 
-		tooltip.appendTo( this.document[ 0 ].body );
+		tooltip.appendTo( this._appendTo( element ) );
 
 		return this.tooltips[ id ] = {
 			element: element,
@@ -446,6 +446,16 @@ $.widget( "ui.tooltip", {
 		delete this.tooltips[ tooltip.attr( "id" ) ];
 	},
 
+	_appendTo: function( target ) {
+		var element = target.closest( ".ui-front,dialog" );
+
+		if ( !element.length ) {
+			element = this.document[ 0 ].body;
+		}
+
+		return element;
+	},
+
 	_destroy: function() {
 		var that = this;