It doesn't do so automatically, but using the helpers feature this can be achieved:
JS:
Handlebars.registerHelper('breaklines', function(text) {
text = Handlebars.Utils.escapeExpression(text);
text = text.replace(/(
|
|
)/gm, '<br>');
return new Handlebars.SafeString(text);
});
HTML template:
<div>
{{breaklines description}}
</div>
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