<tr class="topic <%= cycle('odd', 'even') %> <%= topic.locked? ? 'locked' : 'unlocked' %>">
  <td class='icon'>
    <% if topic.locked? %>
      <span class='lock icon'></span>
    <% end %>
    <% if topic.pinned? %>
      <span class='pin icon'></span>
    <% end %>
    <% if forem_user && view = topic.view_for(forem_user) %>
      <% if topic.posts.exists?(["created_at > ?", view.updated_at]) %>
        <span class='new_posts icon'>new</span>
      <% end %>
    <% end %>
  </td>
  <td class='byline'>
    <%= new_since_last_view_text(topic) %>
    <div class='subject'><%= link_to forem_emojify(topic.subject), forem.forum_topic_path(@forum, topic) %></div>
    <div class='started-by'><%= t "started_by" %><%= relevant_posts(topic).first.user %></div>
  </td>
  <td class='latest-post text-center'>
    <%= link_to_latest_post(topic) -%>
  </td>
  <td class='posts-count text-center'><%= relevant_posts(topic).count %></td>
  <td class='views-count text-center'><%= topic.views_count %></td>
</tr>

<tr class="topic <%= cycle('odd', 'even') %> <%= topic.locked? ? 'locked' : 'unlocked' %>">
  <td class='icon'>
    <% if topic.locked? %>
      <span class='lock icon'></span>
    <% end %>
    <% if topic.pinned? %>
      <span class='pin icon'></span>
    <% end %>
    <% if topic.hidden? %>
      <span class='hidden icon'></span>
    <% end %>
    <% if forem_user && view = topic.view_for(forem_user) %>
      <% if topic.posts.exists?(["created_at > ?", view.updated_at]) %>
        <span class='new_posts icon'>new</span>
      <% end %>
    <% end %>
  </td>
  <td class='byline'>
    <%= new_since_last_view_text(topic) %>
    <div class='subject'><%= link_to forem_emojify(topic.subject), forem.forum_topic_path(@forum, topic) %></div>
    <div class='started-by'><%= t "started_by" %><%= relevant_posts(topic).first.user %></div>
  </td>
  <td class='latest-post text-center'>
    <%= link_to_latest_post(topic) -%>
  </td>
  <td class='posts-count text-center'><%= relevant_posts(topic).count %></td>
  <td class='views-count text-center'><%= topic.views_count %></td>
</tr>

Add missing icon for hidden topics
Add missing icon for hidden topics
