Unfortunately the way the layers work, some items get unequipped when you equip other items. This is because Windlyn currently doesn't have layers that support multi-equipping from the same category. So you can only put one of each item on per category.
We apologise for the inconvenience right now, but it's just how the layers work! Even though it is indeed a skirt, this makes it so users can equip leggings underneath.
I think if possible if Diana can find a vvay to vvork it.. maybe adding an 'overskirt' type of layer could fix the issue? then users can still vvear the leggings in under but can also use the capes and such vvith it instead of them unequipping each other. ^^;
I appreciate your feedback, but we have thought of this already. While there are some "simple solutions" on paper, sometimes it's just that Diana is busy, and doesn't have time to do certain things. Maybe sometime in the future, but for now at least we're able to get items out!