"Show group and whitelist giveaways regardless of level" and "Hide entered Giveaways" options often help in reproducing the crash. Something about RecyclerView being updated in another thread.
FATAL EXCEPTION: main
Process: net.mabako.steamgifts, PID: 12175
java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid view holder adapter positionViewHolder{d404e8a position=1 id=-1, oldPos=0, pLpos:0 scrap
[attachedScrap] tmpDetached not recyclable(1) no parent} android.support.v7.widget.RecyclerView{c39aa94 VFED..... ......ID 0,0-720,98 #7f0900a8
app:id/list}, adapter:net.mabako.steamgifts.adapters.GiveawayAdapter@e1233a9, layout:android.support.v7.widget.LinearLayoutManager@733ad2e, context:net.mabako.steamgifts.activities.MainActivity@a4197b7
at android.support.v7.widget.RecyclerView$Recycler.validateViewHolderForOffsetPosition(RecyclerView.java:5715)
at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5898)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5858)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5854)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2230)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1557)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1517)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:612)
at android.support.v7.widget.RecyclerView.dispatchLayoutStep1(RecyclerView.java:3875)
at android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:3330)
at android.view.View.measure(View.java:26500)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7077)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.view.View.measure(View.java:26500)
at android.support.v4.widget.SwipeRefreshLayout.onMeasure(SwipeRefreshLayout.java:641)
at android.view.View.measure(View.java:26500)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:735)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:481)
at android.view.View.measure(View.java:26500)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7077)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.view.View.measure(View.java:26500)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7077)
at android.support.design.widget.CoordinatorLayout.onMeasureChild(CoordinatorLayout.java:733)
at android.support.design.widget.CoordinatorLayout.onMeasure(CoordinatorLayout.java:805)
at android.view.View.measure(View.java:26500)
at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:1119)
at android.view.View.measure(View.java:26500)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7077)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:143)
at android.view.View.measure(View.java:26500)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7077)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:842)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:721)
at android.view.View.measure(View.java:26500)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7077)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.view.View.measure(View.java:26500)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7077)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:842)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:721)
at android.view.View.measure(View.java:26500)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7077)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at com.android.internal.policy.DecorView.onMeasure(DecorView.java:758)
at android.view.View.measure(View.java:26500)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:3911)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:2636)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2900)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:2352)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:9059)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1234)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1242)
at android.view.Choreographer.doCallbacks(Choreographer.java:902)
at android.view.Choreographer.doFrame(Choreographer.java:835)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1217)
at android.os.Handler.handleCallback(Handler.java:942)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:201)
at android.os.Looper.loop(Looper.java:288)
at android.app.ActivityThread.main(ActivityThread.java:8046)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:703)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:911)
"Show group and whitelist giveaways regardless of level" and "Hide entered Giveaways" options often help in reproducing the crash. Something about RecyclerView being updated in another thread.