Every 8th item being expanded in RecyclerView about expandablelayout HOT 4 CLOSED

/**
     * Expand a card
     *
     * @param holder   Viewholder, used to get the card items
     * @param position The position of the card to expand
     * @param animate  Animate the expand/collapse
     */
    private void expandCard(ListViewHolder holder, int position, boolean animate) {
        String collapseIcon = context.getResources().getString(R.string.mc_chevron_up);
        if (holder.mExpandIcon != null) {
            holder.mExpandIcon.setText(collapseIcon);
        }
        holder.mDetailedView.expand(animate);
        items.get(position).getFileModel().setExpandedState(true);
    }

    /**
     * Collapse a card
     *
     * @param holder   Viewholder, used to get the card items
     * @param position The position of the card to collapse
     * @param animate  Animate the expand/collapse
     */
    private void collapseCard(ListViewHolder holder, int position, boolean animate) {
        String expandIcon = context.getResources().getString(R.string.mc_chevron_down);
        if (holder.mExpandIcon != null) {
            holder.mExpandIcon.setText(expandIcon);
        }
        holder.mDetailedView.collapse(animate);
        items.get(position).getFileModel().setExpandedState(false);
    }

    /**
     * Toggle the expanded state of a card at the given position
     *
     * @param holder   The viewholder, used to get the card items
     * @param position The position that was clicked
     */
    public void toggleExpandedCard(ListViewHolder holder, int position) {
        // If nothing is expanded, expand as normal
        if (expandedPosition == RecyclerView.NO_POSITION) {
            expandCard(holder, position, true);
            expandedPosition = position;
            return;
        }

        // If not clicking the currently expanded item
        // Close the other first
        if (expandedPosition != position) {
            ListViewHolder expandedViewHolder
                    = (ListViewHolder) recyclerView.findViewHolderForAdapterPosition(expandedPosition);
            // Collapse the currently expanded card, if it is not null/is visible
            // Else set it to be closed to the bindviewholder closes it next time it's bound
            if (expandedViewHolder != null) {
                collapseCard(expandedViewHolder, expandedPosition, true);
            } else {
                items.get(expandedPosition).getFileModel().setExpandedState(false);
            }
            expandCard(holder, position, true);
            expandedPosition = position;
            return;
        }

        collapseCard(holder, position, true);
        expandedPosition = RecyclerView.NO_POSITION;
    }

    @Override
    public void onBindViewHolder(final ListViewHolder holder, final int position) {
        // Addon Item at latest position in the list
        final FileModel item = items.get(position).getFileModel();

        // Set the expanded state on
        if (item.getExpandedState()) {
            expandCard(holder, position, false);
        } else {
            if (holder.mDetailedView.isExpanded()) {
                collapseCard(holder, position, false);
            }
        }
...
}