Tree View is not Visible.

Hi,

 

Refer this link

 

https://social.technet.microsoft.com/Forums/ie/en-US/1aff5a8d-62db-46e4-9c01-b8fedf615d37/tree-view-not-visible-even-though-the-enable-tree-view-is-checked?forum=sharepointadminprevious