Incorrect scala list rendering in Mustache template

[volisoft]

Mustache template displays 'List()' for empty list and concatenates list elements for nonemptylist.

Expected behavior

Block with empty list should not be displayed.
Elements of nonempty list should be displayed consequently.

Actual behavior

Empty list is displayed as List()
Elements of nonempty list are concatenated into one string.

Steps to reproduce the behavior

Have a mustache template with following block:

{{#list}}
    <div>
        <ul>
            <li><a href="{{.}}">{{.}}</a></li>
        </ul>
    </div>
 {{/list}}

Pass both empty and nonempty scala list to the model.