Why does 'k-treeview-toggle' duplicate infinitely in File Manager?

[jang]

 

I was configuration a directory in a directory by used File Manager.

 

After that whenever click the sub directory, parent directory move to left (created 'k-treeview-toggle').

 

What's that?

 

DEMO: multiple click the 'folder2' 

https://dojo.telerik.com/@handcake/EJucAmOF

[Martin]

Could you please check this example? I have changed the path for the nested folder and also changed hasDirectories to true for the root folder.