diff --git a/src/wp-admin/js/customize-controls.js b/src/wp-admin/js/customize-controls.js
index d5c8746a57..d4acb7c4cd 100644
--- a/src/wp-admin/js/customize-controls.js
+++ b/src/wp-admin/js/customize-controls.js
@@ -2444,10 +2444,7 @@
 			},
 
 			save: function() {
-				var self  = this,
-					query = $.extend( this.query(), {
-						nonce:  this.nonce.save
-					} ),
+				var self = this,
 					processing = api.state( 'processing' ),
 					submitWhenDoneProcessing,
 					submit;
@@ -2455,7 +2452,11 @@
 				body.addClass( 'saving' );
 
 				submit = function () {
-					var request = wp.ajax.post( 'customize_save', query );
+					var request, query;
+					query = $.extend( self.query(), {
+						nonce:  self.nonce.save
+					} );
+					request = wp.ajax.post( 'customize_save', query );
 
 					api.trigger( 'save', request );
 
diff --git a/src/wp-admin/js/customize-widgets.js b/src/wp-admin/js/customize-widgets.js
index ce38de066d..4aea3173fa 100644
--- a/src/wp-admin/js/customize-widgets.js
+++ b/src/wp-admin/js/customize-widgets.js
@@ -1028,7 +1028,11 @@
 			}
 			data += '&' + $widgetContent.find( '~ :input' ).serialize();
 
+			if ( this._previousUpdateRequest ) {
+				this._previousUpdateRequest.abort();
+			}
 			jqxhr = $.post( wp.ajax.settings.url, data );
+			this._previousUpdateRequest = jqxhr;
 
 			jqxhr.done( function( r ) {
 				var message, sanitizedForm,	$sanitizedInputs, hasSameInputsInResponse,