Источник:
http://alexvoy.blogspot.com/2016/11/...enu-items.html
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It turned out to be a wrong decision to use a back slash character in menu item label. When it is used then in a menu, nothing tells you that something is wrong.
However, no chance to run this menu item from the menu.
So, avoid this and, maybe, other illegal characters for labeling your menu items.
Источник:
http://alexvoy.blogspot.com/2016/11/...enu-items.html