I found strange behavior in RecyclerView with CollapsingToolbarLayout. When I view RecyclerView - it works fine. But when I try to drop it and stop it, fast enough - I see that the RecyclerView scrolls "inside of itself."
Bad behavior:
RecyclerView should not scroll before CollapsingToolbarLayout works completely, but it (in normal scrolling everything works fine, the problem only occurs when dropping).

My layout is as follows:
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="kg.nongrate.arseniii.collapsingtoolbarlayouttest.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<TextView
android:layout_width="match_parent"
android:layout_height="240dp"
android:layout_marginTop="?attr/actionBarSize"
android:background="@color/colorPrimary"
android:text="1. Hello World!\n\n\n2. Hello World!\n\n\n3. Hello World!"
android:textColor="@color/colorAccent"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.7"
android:gravity="center" />
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimaryDark"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:layout_collapseMode="pin"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0cc"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
Here are the sources and two videos that show what I mean:
https: // NonGrate@bitbucket.org /NonGrate/collapsingtoolbarlayout-recyclerview-bug.git