update
After you mentioned that you are not using client-side routing I checked again and it seems that angular.js (all versions) does not add hashes (/#/) to URL unless you use $locationProvider
or $routeProvider
even when html5Mode=false
.
`
If you do client-side routing or using $location:
you need to use html5Mode - docs:
app.config(function($locationProvider){
$locationProvider.html5Mode(true)
})