Program: 62200
Project: 62200
Buggy source:
@Override public void caretUpdate(CaretEvent e){
  if (abc == null) {
    return;
  }
  if (ignoreCarret) {
    return;
  }
  getCaret().setVisible(true);
  int pos=getCaretPosition();
  abcPanel.detailPanel.methodTraitPanel.methodCodePanel.setIgnoreCarret(true);
  try {
    classIndex=-1;
    for (    Highlighting cm : classHighlights) {
      if ((pos >= cm.startPos) && (pos < cm.startPos + cm.len)) {
        classIndex=(int)cm.offset;
        displayClass(classIndex,scriptIndex);
        break;
      }
    }
    for (    Highlighting tm : methodHighlights) {
      if ((pos >= tm.startPos) && (pos < tm.startPos + tm.len)) {
        String name="String_Node_Str";
        if (abc != null) {
          if (classIndex > -1) {
            name=abc.instance_info[classIndex].getName(abc.constants).getNameWithNamespace(abc.constants);
          }
        }
        Trait t=null;
        for (        Highlighting th : traitHighlights) {
          if ((pos >= th.startPos) && (pos < th.startPos + th.len)) {
            lastTraitIndex=(int)th.offset;
            if (abc != null) {
              t=abc.findTraitByTraitId(classIndex,lastTraitIndex);
              if (t != null) {
                name+="String_Node_Str" + t.getName(abc).getName(abc.constants,new ArrayList<String>());
              }
            }
          }
        }
        displayMethod(pos,(int)tm.offset,name,t);
        currentMethodHighlight=tm;
        return;
      }
    }
    if (classIndex == -1) {
      setNoTrait();
      return;
    }
    for (    Highlighting th : traitHighlights) {
      if ((pos >= th.startPos) && (pos < th.startPos + th.len)) {
        lastTraitIndex=(int)th.offset;
        Trait tr=abc.findTraitByTraitId(classIndex,(int)th.offset);
        if (tr != null) {
          if (tr instanceof TraitSlotConst) {
            abcPanel.detailPanel.slotConstTraitPanel.load((TraitSlotConst)tr,abc);
            abcPanel.detailPanel.showCard(DetailPanel.SLOT_CONST_TRAIT_CARD,tr);
            abcPanel.detailPanel.setEditMode(false);
            return;
          }
        }
        currentMethodHighlight=th;
        String name="String_Node_Str";
        Trait t=null;
        if (abc != null) {
          name=abc.instance_info[classIndex].getName(abc.constants).getNameWithNamespace(abc.constants);
          t=abc.findTraitByTraitId(classIndex,lastTraitIndex);
          if (t != null) {
            name+="String_Node_Str" + t.getName(abc).getName(abc.constants,new ArrayList<String>());
          }
        }
        displayMethod(pos,abc.findMethodIdByTraitId(classIndex,(int)th.offset),name,t);
        return;
      }
    }
    setNoTrait();
  }
  finally {
    abcPanel.detailPanel.methodTraitPanel.methodCodePanel.setIgnoreCarret(false);
  }
}

Fixed version (ground truth):
@Override public void caretUpdate(CaretEvent e){
  if (abc == null) {
    return;
  }
  if (ignoreCarret) {
    return;
  }
  getCaret().setVisible(true);
  int pos=getCaretPosition();
  abcPanel.detailPanel.methodTraitPanel.methodCodePanel.setIgnoreCarret(true);
  try {
    classIndex=-1;
    for (    Highlighting cm : classHighlights) {
      if ((pos >= cm.startPos) && (pos < cm.startPos + cm.len)) {
        classIndex=(int)cm.offset;
        displayClass(classIndex,scriptIndex);
        break;
      }
    }
    for (    Highlighting tm : methodHighlights) {
      if ((pos >= tm.startPos) && (pos < tm.startPos + tm.len)) {
        String name="String_Node_Str";
        if (abc != null) {
          if (classIndex > -1) {
            name=abc.instance_info[classIndex].getName(abc.constants).getNameWithNamespace(abc.constants);
          }
        }
        Trait t=null;
        for (        Highlighting th : traitHighlights) {
          if ((pos >= th.startPos) && (pos < th.startPos + th.len)) {
            lastTraitIndex=(int)th.offset;
            if (abc != null) {
              t=abc.findTraitByTraitId(classIndex,lastTraitIndex);
              isStatic=abc.isStaticTraitId(classIndex,lastTraitIndex);
              if (t != null) {
                name+="String_Node_Str" + t.getName(abc).getName(abc.constants,new ArrayList<String>());
              }
            }
          }
        }
        displayMethod(pos,(int)tm.offset,name,t,isStatic);
        currentMethodHighlight=tm;
        return;
      }
    }
    if (classIndex == -1) {
      setNoTrait();
      return;
    }
    for (    Highlighting th : traitHighlights) {
      if ((pos >= th.startPos) && (pos < th.startPos + th.len)) {
        lastTraitIndex=(int)th.offset;
        Trait tr=abc.findTraitByTraitId(classIndex,(int)th.offset);
        if (tr != null) {
          if (tr instanceof TraitSlotConst) {
            abcPanel.detailPanel.slotConstTraitPanel.load((TraitSlotConst)tr,abc);
            abcPanel.detailPanel.showCard(DetailPanel.SLOT_CONST_TRAIT_CARD,tr);
            abcPanel.detailPanel.setEditMode(false);
            return;
          }
        }
        currentMethodHighlight=th;
        String name="String_Node_Str";
        Trait t=null;
        if (abc != null) {
          name=abc.instance_info[classIndex].getName(abc.constants).getNameWithNamespace(abc.constants);
          t=abc.findTraitByTraitId(classIndex,lastTraitIndex);
          isStatic=abc.isStaticTraitId(classIndex,lastTraitIndex);
          if (t != null) {
            name+="String_Node_Str" + t.getName(abc).getName(abc.constants,new ArrayList<String>());
          }
        }
        displayMethod(pos,abc.findMethodIdByTraitId(classIndex,(int)th.offset),name,t,isStatic);
        return;
      }
    }
    setNoTrait();
  }
  finally {
    abcPanel.detailPanel.methodTraitPanel.methodCodePanel.setIgnoreCarret(false);
  }
}