Crash related to scrolling while loading more

[atroutt]

I had a batch size of 20 and when I hit the top the app crashes with an error

E/AndroidRuntime: FATAL EXCEPTION: main java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid view holder adapter positionViewHolder{2e25931 position=34 id=-1, oldPos=14, pLpos:14 scrap [attachedScrap] tmpDetached no parent} at android.support.v7.widget.RecyclerView$Recycler.validateViewHolderForOffsetPosition(RecyclerView.java:4505) at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4636) at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4617) at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1994) at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1390) at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1353) at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:549) at android.support.v7.widget.RecyclerView.dispatchLayoutStep1(RecyclerView.java:2979) at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:2904) at android.support.v7.widget.RecyclerView.consumePendingUpdateOperations(RecyclerView.java:1482) at android.support.v7.widget.RecyclerView.access$400(RecyclerView.java:147) at android.support.v7.widget.RecyclerView$ViewFlinger.run(RecyclerView.java:4037) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858) at android.view.Choreographer.doCallbacks(Choreographer.java:670) at android.view.Choreographer.doFrame(Choreographer.java:603) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:844) at android.os.Handler.handleCallback(Handler.java:746) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5443) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)

I found a similar error in another library and someone there suggested that the solution is to block scrolling while the adapter's dataset is being updated frogermcs/InstaMaterial#25 I think this would need to be done in the library's code.

[MatthewTPage]

I messed around with this area of the code a lot today. I can't replicate the error, so let's consider it solved for now.