#442

backend/app/controllers/post_versions_controller.rb

@@ -15,6 +15,7 @@ class PostVersionsController < ApplicationController
     offset = (page - 1) * limit
 
     q = HistoryAccess.visible(PostVersion.all)
+    q = q.with_previous_version if tag_id || external_tag_id
     q = q.where('post_versions.post_id = ?', post_id) if post_id
     q = q.with_previous_version if tag_id || external_tag_id
     if external_tag_id || (tag_id && !(Tag.exists?(id: tag_id)))