Program: 147214
Project: 147214
Buggy source:
@Override protected void mouseClicked(int x,int y,int button){
  if (button != 0) {
    return;
  }
  int left=(width - XSIZE) / 2;
  int top=(height - YSIZE) / 2;
  int startX=left + XSTART;
  int startY=top + YSTART;
  int mouseX=(x - startX);
  int mouseY=(y - startY);
  int dimension=FMLClientHandler.instance().getClient().theWorld.provider.dimensionId;
  for (  int page : loreCache) {
    LoreData data=LoreLoader.INSTANCE.getLore(page);
    if (data.validForDimension(dimension)) {
      int drawX=(((page - 1) % 4) * SLOT_GAP);
      int drawY=0;
      if ((page - 1) > 4) {
        drawY=(((page - 1) / 4) * SLOT_GAP);
      }
      if (inBounds(drawX,drawY,16,16,mouseX,mouseY)) {
        currentLore.clear();
        selectedLore=page;
        String[] lore=LoreLoader.INSTANCE.getLore(selectedLore).getLore(dimension).split("String_Node_Str");
        List<String> newList=new ArrayList<String>();
        for (int i=0; i < lore.length; i++) {
          String str=lore[i];
          if (!str.isEmpty()) {
            str=str.trim();
            str=str.replace("String_Node_Str","String_Node_Str");
            str="String_Node_Str" + str;
            newList.add(str);
            if (i != lore.length - 1) {
              newList.add("String_Node_Str");
            }
          }
        }
        for (        String str : newList) {
          currentLore.addAll(mc.fontRenderer.listFormattedStringToWidth(str,(int)(((XSIZE / 2) - 45) / SCALE)));
        }
        scrollIndex=0;
        break;
      }
    }
  }
  if (inBounds(left + XSIZE / 2 + 78,top + 37,13,16,x,y)) {
    scroll(-1);
  }
  if (inBounds(left + XSIZE / 2 + 78,top + 203,13,16,x,y)) {
    scroll(1);
  }
  LoreData data=null;
  if (selectedLore >= 0) {
    data=LoreLoader.INSTANCE.getLore(selectedLore);
  }
  if (data != null) {
    if (data.getSound(dimension).isPlaying()) {
      if (inBounds(left + XSIZE / 2 + 41,top + 204,5,5,x,y)) {
        data.getSound(dimension).stop();
      }
    }
 else {
      if (inBounds(left + XSIZE / 2 + 122,top + 203,4,7,x,y)) {
        data.getSound(dimension).start();
      }
    }
  }
}

Fixed version (ground truth):
@Override protected void mouseClicked(int x,int y,int button){
  if (button != 0) {
    return;
  }
  int left=(width - XSIZE) / 2;
  int top=(height - YSIZE) / 2;
  int startX=left + XSTART;
  int startY=top + YSTART;
  int mouseX=(x - startX);
  int mouseY=(y - startY);
  int dimension=FMLClientHandler.instance().getClient().theWorld.provider.dimensionId;
  for (  int page : loreCache) {
    LoreData data=LoreLoader.INSTANCE.getLore(page);
    if (data.validForDimension(dimension)) {
      int drawX=(((page - 1) % 4) * SLOT_GAP);
      int drawY=0;
      if ((page - 1) > 4) {
        drawY=(((page - 1) / 4) * SLOT_GAP);
      }
      if (inBounds(drawX,drawY,16,16,mouseX,mouseY)) {
        loadLore(page);
        scrollIndex=0;
        break;
      }
    }
  }
  if (inBounds(left + XSIZE / 2 + 78,top + 37,13,16,x,y)) {
    scroll(-1);
  }
  if (inBounds(left + XSIZE / 2 + 78,top + 203,13,16,x,y)) {
    scroll(1);
  }
  LoreData data=null;
  if (selectedLore >= 0) {
    data=LoreLoader.INSTANCE.getLore(selectedLore);
  }
  if (data != null) {
    if (data.getSound(dimension).isPlaying()) {
      if (inBounds(left + XSIZE / 2 + 41,top + 204,5,5,x,y)) {
        data.getSound(dimension).stop();
      }
    }
 else {
      if (inBounds(left + XSIZE / 2 + 122,top + 203,4,7,x,y)) {
        data.getSound(dimension).start();
      }
    }
  }
}