Adding add-ons to a world disables achievements

I was creating a new survival world for Minecraft PE 1.0.0.7. I was going to add the Villager Trading add-on,but once I tapped on the + button,it shown me a warning message. It said that Xbox Live achievements will be disabled. I added the add-on and checked my settings for the world,I noticed that there is no Xbox Live achiements is disabled for this world message displayed. Please fix this bug. (Device: Sony Xperia E4g Dual)