I was changing my outfit and I was looking through the backdrop items and I knew for a fact I had "Fireflies in a jar" in my wardrobe, but it was no where to be found.. it only showed up after I specifically searched for "fireflies". it's been in my wardrobe for literal years, and used to show up fine.. [update]: I just checked again and it does show up if I go to the backdrop layer sorted by name, but if I sort by 'added to wardrobe' (which I do by default) it's gone. I have no idea if this is the only item that goes missing like this but it's the only one I happened to notice. [update 2]: I just noticed another missing item, this time my 'zircon petit demon horns' didn't show up when I sort by name, but do show up when I sort by 'added to wardrobe' or search for the specifically.. so this is definitely a recurring problem with multiple items.
on a sort of related note: I also noticed that I can't see my replacement limbs in my wardrobe while I'm changing my outfit, I can only see them around the site after I save my new outfit or if I 'save' it under the 'share' tab in the wardrobe.. it's kind of annoying when I want to see how certain body blushes or stockings look on my arms and legs since they're a completely different colour than the rest of my skin. (sorry if I should have created a seperate topic for this it's just been bothering me and since I'm here anyway)
This might not be the right answer, but sometimes the wardrobe doesn't include the last page of items in the list of available pages and it takes another click of the next arrow to hit the actual last page. It sounds like these items might be on that last page.