Ticket #25696: 25696.patch

src/wp-admin/js/inline-edit-post.js

@@ -50 +50 @@
                 // add events
                 $('#the-list').on( 'click', 'a.editinline', function( e ) {
                         e.preventDefault();
+                        // Don't open a new Quick Edit form when a previous Quick Edit request has not completed yet.
+                        if ( inlineEditPost.xhr && inlineEditPost.xhr.readyState !== 4 ) {
+                                return;
+                        }
                         inlineEditPost.edit(this);
                 });
 
@@ -264 +268 @@
                 fields = $('#edit-'+id).find(':input').serialize();
                 params = fields + '&' + $.param(params);
 
-                // make ajax request
-                $.post( ajaxurl, params,
+                // Abort the AJAX request if there's already one in progress.
+                if ( inlineEditPost.xhr && inlineEditPost.xhr.readyState !== 4 ) {
+                        inlineEditPost.xhr.abort();
+                }
+
+                // Fire the AJAX request.
+                inlineEditPost.xhr = $.post( ajaxurl, params,
                         function(r) {
                                 $( 'table.widefat .spinner' ).removeClass( 'is-active' );
                                 $( '.ac_results' ).hide();