Program: 165743
Project: 165743
Buggy source:
private void updateList(){
  itemList.removeChildren();
  if (tileEntity != null && !inventorySlots.getSlot(ModularStorageContainer.SLOT_STORAGE_MODULE).getHasStack()) {
    amountLabel.setText("String_Node_Str");
    compactButton.setEnabled(false);
    cycleButton.setEnabled(false);
    return;
  }
  cycleButton.setEnabled(isTabletWithRemote() || isRemote());
  String filterText=filter.getText().toLowerCase().trim();
  String view=viewMode.getCurrentChoice();
  int numcolumns;
  int labelWidth;
  int spacing;
  if (VIEW_LIST.equals(view)) {
    numcolumns=1;
    labelWidth=210;
    spacing=5;
  }
 else   if (VIEW_COLUMNS.equals(view)) {
    numcolumns=2;
    labelWidth=86;
    spacing=5;
  }
 else {
    numcolumns=12;
    labelWidth=0;
    spacing=3;
  }
  int max;
  List<Pair<ItemStack,Integer>> items=new ArrayList<>();
  if (tileEntity != null) {
    for (int i=ModularStorageContainer.SLOT_STORAGE; i < tileEntity.getSizeInventory(); i++) {
      ItemStack stack=tileEntity.getStackInSlot(i);
      if (stack != null && stack.stackSize > 0) {
        String displayName=stack.getDisplayName();
        if (filterText.isEmpty() || displayName.toLowerCase().contains(filterText)) {
          items.add(Pair.of(stack,i));
        }
      }
    }
    max=tileEntity.getSizeInventory() - ModularStorageContainer.SLOT_STORAGE;
  }
 else {
    for (int i=0; i < RemoteStorageItemContainer.MAXSIZE_STORAGE; i++) {
      Slot slot=inventorySlots.getSlot(i);
      ItemStack stack=slot.getStack();
      if (stack != null && stack.stackSize > 0) {
        String displayName=stack.getDisplayName();
        if (filterText.isEmpty() || displayName.toLowerCase().contains(filterText)) {
          items.add(Pair.of(stack,i));
        }
      }
    }
    max=mc.thePlayer.getHeldItem(EnumHand.MAIN_HAND).getTagCompound().getInteger("String_Node_Str");
  }
  amountLabel.setText(items.size() + "String_Node_Str" + max);
  compactButton.setEnabled(max > 0);
  int sort=getCurrentSortMode();
  boolean dogroups=groupMode.getCurrentChoiceIndex() == 1;
  ItemSorter itemSorter=typeModule.getSorters().get(sort);
  Collections.sort(items,itemSorter.getComparator());
  Pair<Panel,Integer> currentPos=MutablePair.of(null,0);
  Pair<ItemStack,Integer> prevItem=null;
  for (  Pair<ItemStack,Integer> item : items) {
    currentPos=addItemToList(item.getKey(),itemList,currentPos,numcolumns,labelWidth,spacing,item.getValue(),dogroups && (prevItem == null || !itemSorter.isSameGroup(prevItem,item)),itemSorter.getGroupName(item));
    prevItem=item;
  }
}

Fixed version (ground truth):
private void updateList(){
  itemList.removeChildren();
  if (tileEntity != null && !inventorySlots.getSlot(ModularStorageContainer.SLOT_STORAGE_MODULE).getHasStack()) {
    amountLabel.setText("String_Node_Str");
    compactButton.setEnabled(false);
    cycleButton.setEnabled(false);
    return;
  }
  cycleButton.setEnabled(isTabletWithRemote() || isRemote());
  String filterText=filter.getText().toLowerCase().trim();
  String view=viewMode.getCurrentChoice();
  int numcolumns;
  int labelWidth;
  int spacing;
  if (VIEW_LIST.equals(view)) {
    numcolumns=1;
    labelWidth=210;
    spacing=5;
  }
 else   if (VIEW_COLUMNS.equals(view)) {
    numcolumns=2;
    labelWidth=86;
    spacing=5;
  }
 else {
    numcolumns=12;
    labelWidth=0;
    spacing=3;
  }
  int max;
  List<Pair<ItemStack,Integer>> items=new ArrayList<>();
  if (tileEntity != null) {
    for (int i=ModularStorageContainer.SLOT_STORAGE; i < tileEntity.getSizeInventory(); i++) {
      ItemStack stack=tileEntity.getStackInSlot(i);
      if (stack != null && stack.stackSize > 0) {
        String displayName=stack.getDisplayName();
        if (filterText.isEmpty() || displayName.toLowerCase().contains(filterText)) {
          items.add(Pair.of(stack,i));
        }
      }
    }
    max=tileEntity.getSizeInventory() - ModularStorageContainer.SLOT_STORAGE;
  }
 else {
    for (int i=0; i < RemoteStorageItemContainer.MAXSIZE_STORAGE; i++) {
      Slot slot=inventorySlots.getSlot(i);
      ItemStack stack=slot.getStack();
      if (stack != null && stack.stackSize > 0) {
        String displayName=stack.getDisplayName();
        if (filterText.isEmpty() || displayName.toLowerCase().contains(filterText)) {
          items.add(Pair.of(stack,i));
        }
      }
    }
    max=mc.thePlayer.getHeldItem(EnumHand.MAIN_HAND).getTagCompound().getInteger("String_Node_Str");
  }
  amountLabel.setText(items.size() + "String_Node_Str" + max);
  compactButton.setEnabled(max > 0);
  int sort=getCurrentSortMode();
  boolean dogroups=groupMode.getCurrentChoiceIndex() == 1;
  ItemSorter itemSorter=typeModule.getSorters().get(sort);
  Collections.sort(items,itemSorter.getComparator());
  Pair<Panel,Integer> currentPos=MutablePair.of(null,0);
  Pair<ItemStack,Integer> prevItem=null;
  for (  Pair<ItemStack,Integer> item : items) {
    currentPos=addItemToList(item.getKey(),itemList,currentPos,numcolumns,labelWidth,spacing,item.getValue(),dogroups && (prevItem == null || !itemSorter.isSameGroup(prevItem,item)),itemSorter.getGroupName(item));
    prevItem=item;
  }
  int newfirst=-1;
  if (itemList.getCountSelected() == 0) {
    if (itemList.getBounds() != null) {
      itemList.setFirstSelected(0);
      newfirst=itemList.getChildCount() - itemList.getCountSelected();
      if (newfirst < 0) {
        newfirst=0;
      }
    }
  }
 else   if (itemList.getFirstSelected() > (itemList.getChildCount() - itemList.getCountSelected())) {
    newfirst=itemList.getChildCount() - itemList.getCountSelected();
  }
  if (newfirst >= 0) {
    itemList.setFirstSelected(newfirst);
  }
}