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I recently bought this wallpaper from the TV Series Quest, and I placed it behind my doll on her wall. I went to save, and after I looked over my avatar, I saw one tiny problem. The wallpaper did not show up in the background. This really bothers me. Please help fix this, Feerik!
I often have this problem, usually with items categorized as "Garden Store" but I've had it with items in the "Walls" section as well. Don't worry, though, they usually reappear by the next day.