Fix reply content not syncing or syncing old value

src/Model/Post.php

@@ -27,7 +27,9 @@ public function toSearchableArray(): array
 
         return [
             // TODO: convert $this to CommentPost to use as context?
-            'content' => $formatter->unparse($this->getOriginal('content'), $this),
+            // We use the rendered version and not unparsed version as the unparsed version might expose original text that's hidden by extensions in the output
+            // strip_tags is used to strip HTML tags and their properties from the index but not provide any additional security
+            'content' => strip_tags($formatter->render($this->content ?? '<t></t>', $this)),
         ];
     }
 

src/ScoutServiceProvider.php

@@ -4,6 +4,7 @@
 
 use Flarum\Discussion\Discussion;
 use Flarum\Foundation\AbstractServiceProvider;
+use Flarum\Post\CommentPost;
 use Flarum\Post\Post;
 use Flarum\Settings\SettingsRepositoryInterface;
 use Flarum\User\User;
@@ -38,6 +39,7 @@ public function register()
 
     public function boot()
     {
+        CommentPost::observe(new FlarumModelObserver());
         Discussion::observe(new FlarumModelObserver());
         Post::observe(new FlarumModelObserver());
         User::observe(new FlarumModelObserver());