fix

assets/menu/menu.js

@@ -423,7 +423,7 @@ __PluginManager__.register('menu',function(module, exports, require) {
 
         };
         Menu.prototype.reInit = function (recursiveCalcStyle = false) {
-            // console.warn('Menu: reInit ' + this.id);
+            console.warn('Menu: reInit ' + this.id);
             if(this.bInit === false) {
                 return;
             }
@@ -432,14 +432,15 @@ __PluginManager__.register('menu',function(module, exports, require) {
             this.removeParentEventListener();
             //this.removeDocumentEventListener();
 
-            this.removeAnimation();
+            //this.removeAnimation();
 
+            if(this.node.parentElement !== this.options.parent) {
                 this.node.remove();
+                this.options.parent.prepend(this.getNode());
+            }
 
             this.render();
 
-            this.options.parent.prepend(this.getNode());
-
             if(this.bActive) {
                 this.calcStyle(recursiveCalcStyle);
                 this.showNode();
@@ -830,7 +831,7 @@ __PluginManager__.register('menu',function(module, exports, require) {
         return Menu;
     })();
     var getInstance = function(options = {}, items = []) {
-        if(options instanceof Menu) {
+        if(options instanceof MenuClass) {
             return options;
         }
         if(typeof options === 'string') {

tests/index.php

@@ -0,0 +1,9 @@
+<div style="display: flex; flex-direction: column; align-items: center;">
+
+    <a href="menu.php">Menu</a>
+    <a href="templates.svg.php">templates.svg</a>
+    <a href="flex-kit.php">flex-kit</a>
+    <a href="cheatsheet.php">cheatsheet</a>
+    <a href="card/block.php">card/block</a>
+
+</div>