Add blog tags/topics to recent posts listing

[Jsum]

You need to loop through the topics per post:

{% for post in posts %}

 {{ post.publish_date_localized }} | 
 {% for topic in post.topic_list %}
 <a class="topic-link" href="{{ blog_tag_url(group.id, topic.slug) }}">
 {{ topic.name }}
 </a>{% if not loop.last %},{% endif %}
 {% endfor %}

{% endfor %}