Previously, hidden photos have been hidden only from collection. If i hide photo and add it to special alboom i can sow it by look in this special album. I have two different type of photo, whitch i whant to hide from colection but i like look on it separately. Now, in new iOS 11 this not working. If photo is hidden i can saw it only in hidden folder. It is unusable. And also photo count ih folders count this hiden photos. So i have two empty folders with non zero count of includet photos.