Facing the missing element issue in Multi view type in recyclerview

Question

I'm trying to achieve like this Two recyclerview when i scroll down , the first recylcer to be scrolled too, how?

I implemented this but I'm facing issue like 0th element of second list in second view type is missing but when I post new item then that missing item visible at position 1 of adapter but then that new item in second list is missing until and unless I don't post any any item in second list

@Override
public int getItemViewType(int position) {
    if (isPositionPopularRt(position)) {
        return TYPE_POPULAR_RT;
    }
    return TYPE_POST_LIST;
}

private boolean isPositionPopularRt(int position) {
    return position == 0;
}
@NotNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NotNull ViewGroup viewGroup, int viewType) {
    mUserModel = SharedPrefsUtils.getObject(AppConstants.PrefKey.KEY_USER_MODEL, UserModel.class);
    if (viewType == TYPE_POST_LIST) {
        //inflate your layout and pass it to view holder
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.view_for_cell, viewGroup, false);
        CustomViewHolder tempViewHolder = new CustomViewHolder(view);
        view.setTag(tempViewHolder);
        return tempViewHolder;
    } else if (viewType == TYPE_POPULAR_RT) {
        //inflate your layout and pass it to view holder
        View v =  LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.popular_rt_recycler_view, viewGroup, false);
        return new MyViewHolderPopularRt(v);
    }
    throw new RuntimeException("there is no type that matches the type " + viewType + " + make sure your using types correctly");
}