Problem with fillet in Solidworks 2016-2017

Hi all,

I have attached an image related to a part(simple).  Till date I don't have any problem with fillet but after looking into that I got surprised because the fillet option is working on a portion of non-selected edge.  Please check the file and provide the solution.

I have attached part file too.

Hope I can get solution.

Thanks

Naga Ranjithkumar A

SolidworksParts And Features