android.support.design.widget.CollapsingToolbarLayout不正确地调用requestLayout（）

I am getting a weird behavior in my CoordinatorLayout I have an Activity which calls another Activity However when I press back button in My app For 1st item it getting returned to the calling activity Correctly however for second Item I have to press back button two times and so on. heres my Xml fileI am getting a weird behavior in my Coordinator