Fix #3243: Don't create new note versions when nothing is changed.

app/models/note.rb

@@ -146,6 +146,7 @@ class Note < ApplicationRecord
   end
 
   def create_version
+    return unless versioned_attributes_changed?
     User.where(id: CurrentUser.id).update_all("note_update_count = note_update_count + 1")
     CurrentUser.reload
 
@@ -158,6 +159,10 @@ class Note < ApplicationRecord
     end
   end
 
+  def versioned_attributes_changed?
+    new_record? || x_changed? || y_changed? || width_changed? || height_changed? || is_active_changed? || body_changed?
+  end
+
   def create_new_version
     versions.create(
       :updater_id => updater_id,