Places API bad result of radarSearch for horizontal boxes (horizontal path)

Question

I'm using radarSearch to search places inside boxes (I use RouteBoxer).

It works fine for vertical paths - http://jsbin.com/nedamo/edit?html,output

But when path is horizontal then radarSearch returns result only in the center of boxes - http://jsbin.com/wijoju/edit?html,output

Any suggestions how to deal with this issue?