twitter bootstrap 3 - Laravel elixir 5.1 escapes chars with string interpolation -

i'm developing app laravel 5.1 , bootstrap. problem is, when use breadcrums, each separator has addiotional char. shows this: item /\00a0 item. discovered, bootstrap sass has interpolation append char separator. so, question is, did wrong or elixir bug??

edit

the file _breadcrumbs.scss of bootstrap has this:

content: "#{$breadcrumb-separator}\00a0";

if change to

content : $breadcrumb-separator + \00a0;

it works. that's why it's interpolation problem.

it's confirmed bug of libsass#1115, downstream hotfix merged @ bootstrap-sass project, wait 3.3.6 release of bootstrap-sass.