Patch proposal for https://github.com/medialize/jQuery-contextMenu/issues/132 It wraps a bunch of layerClick() code inside a "!fakeClick" condition.

jquery.contextMenu.js.patch

Index: jquery.contextMenu.js
===================================================================
--- jquery.contextMenu.js                 (revision 6957)
+++ jquery.contextMenu.js	(working copy)
@@ -351,6 +351,7 @@
                 button = e.button,
                 x = e.pageX,
                 y = e.pageY,
+                fakeClick = x === undefined,
                 target, 
                 offset,
                 selectors;
@@ -359,6 +360,7 @@
             e.stopImmediatePropagation();
             
             setTimeout(function() {
+                if (!fakeClick) {
                 var $window, hideshow, possibleTarget;
                 var triggerAction = ((root.trigger == 'left' && button === 0) || (root.trigger == 'right' && button === 2));
                 
@@ -403,6 +405,7 @@
                         $(target).contextMenu({x: x, y: y});
                     });
                 }
+                }
 
                 root.$menu.trigger('contextmenu:hide');
             }, 50);

Hello, I'm using fullcalendar with contextmenu and this patch saved from this very same problem when using multiple context menus, one for events and one for days,

Love to all involved in this project :D!

It's been like 4 years since you posted this and the error still exist. Thanks for the patch, you saved me hours, if not days, of work!