wrong super call

app/controllers/spree/admin/products_controller_decorator.rb

@@ -1,17 +1,11 @@
 Spree::Admin::ProductsController.class_eval do
-  update.before :set_stores
-
+alias :spree_update :update
   def update
     store_ids = params[:product][:store_ids]
     if store_ids.present?
       params[:product][:store_ids] = store_ids.split(',')
     end
-    super
+    spree_update
   end
 
-  private
-
-  def set_stores
-    @product.store_ids = nil unless params[:product].key? :store_ids
-  end
 end

app/mailers/spree/order_mailer.rb

@@ -3,7 +3,9 @@ class OrderMailer < BaseMailer
     def confirm_email(order, resend = false)
       @order = order.respond_to?(:id) ? order : Spree::Order.find(order)
       subject = (resend ? "[#{Spree.t(:resend).upcase}] " : '')
-      subject += "#{@order.store.name} #{Spree.t('order_mailer.confirm_email.subject')} ##{@order.number}"
+      storename = @order.store.present? ? @order.store.name :  Spree::Store.default.name
+      subject += "#{storename} #{Spree.t('order_mailer.confirm_email.subject')} ##{@order.number}"
+
       mail_params = {to: @order.email, subject: subject}
       if @order.store.present? && @order.store.mail_from_address.present?
         mail_params[:from] = @order.store.mail_from_address

app/overrides/decorate_admin_configurations_index.rb

@@ -1,4 +1,5 @@
 Deface::Override.new(virtual_path: 'spree/admin/shared/sub_menu/_configuration',
                      name: 'add_stores_to_admin_menu',
+                      :original => '41c9125ad4022e7dac858458620c2a141e4f49d0',
                      insert_bottom: '[data-hook="admin_configurations_sidebar_menu"]',
                      text: '<%= configurations_sidebar_menu_item Spree.t(:stores_admin), spree.admin_stores_url %>')

app/overrides/decorate_admin_products_form.rb

@@ -1,6 +1,7 @@
 Deface::Override.new(
   virtual_path: "spree/admin/products/_form",
   name: "multi_domain_admin_product_form_meta",
+   :original => '2724f51d519589f73401abeae8f8e05d9dae99c4',
   insert_bottom: "[data-hook='admin_product_form_meta']",
   partial: "spree/admin/products/stores",
   disabled: false)