diff --git a/extensions/tags/js/forum/dist/extension.js b/extensions/tags/js/forum/dist/extension.js
index bbe7b6b81..441360706 100644
--- a/extensions/tags/js/forum/dist/extension.js
+++ b/extensions/tags/js/forum/dist/extension.js
@@ -150,6 +150,14 @@ System.register('flarum/tags/addTagFilter', ['flarum/extend', 'flarum/components
       return original();
     });
 
+    extend(IndexPage.prototype, 'view', function (vdom) {
+      var tag = this.currentTag();
+
+      if (tag) {
+        vdom.attrs.className += ' IndexPage--tag' + tag.id();
+      }
+    });
+
     // If currently viewing a tag, restyle the 'new discussion' button to use
     // the tag's color.
     extend(IndexPage.prototype, 'sidebarItems', function (items) {
diff --git a/extensions/tags/js/forum/src/addTagFilter.js b/extensions/tags/js/forum/src/addTagFilter.js
index 5ec5acb3d..1392d144e 100644
--- a/extensions/tags/js/forum/src/addTagFilter.js
+++ b/extensions/tags/js/forum/src/addTagFilter.js
@@ -20,6 +20,14 @@ export default function() {
     return original();
   });
 
+  extend(IndexPage.prototype, 'view', function(vdom) {
+    const tag = this.currentTag();
+
+    if (tag) {
+      vdom.attrs.className += ' IndexPage--tag'+tag.id();
+    }
+  });
+
   // If currently viewing a tag, restyle the 'new discussion' button to use
   // the tag's color.
   extend(IndexPage.prototype, 'sidebarItems', function(items) {
diff --git a/extensions/tags/src/Api/Serializer/TagSerializer.php b/extensions/tags/src/Api/Serializer/TagSerializer.php
index 8979456b1..da61ad5e4 100644
--- a/extensions/tags/src/Api/Serializer/TagSerializer.php
+++ b/extensions/tags/src/Api/Serializer/TagSerializer.php
@@ -12,7 +12,7 @@
 namespace Flarum\Tags\Api\Serializer;
 
 use Flarum\Api\Serializer\AbstractSerializer;
-use Flarum\Api\Serializer\DiscussionSerializer;
+use Flarum\Api\Serializer\DiscussionBasicSerializer;
 
 class TagSerializer extends AbstractSerializer
 {
@@ -64,6 +64,6 @@ class TagSerializer extends AbstractSerializer
      */
     protected function lastDiscussion($tag)
     {
-        return $this->hasOne($tag, DiscussionSerializer::class);
+        return $this->hasOne($tag, DiscussionBasicSerializer::class);
     }
 }
diff --git a/extensions/tags/src/Listener/AddForumTagsRelationship.php b/extensions/tags/src/Listener/AddForumTagsRelationship.php
index abcb4f91f..a7e7782cc 100755
--- a/extensions/tags/src/Listener/AddForumTagsRelationship.php
+++ b/extensions/tags/src/Listener/AddForumTagsRelationship.php
@@ -68,7 +68,10 @@ class AddForumTagsRelationship
         // doesn't actually have a tags relationship, we will manually load and
         // assign the tags data to it using an event listener.
         if ($event->isController(ShowForumController::class)) {
-            $event->data['tags'] = Tag::whereVisibleTo($event->actor)->withStateFor($event->actor)->with('lastDiscussion')->get();
+            $event->data['tags'] = Tag::whereVisibleTo($event->actor)
+                ->withStateFor($event->actor)
+                ->with(['parent', 'lastDiscussion'])
+                ->get();
         }
     }