Program: 86766
Project: 86766
Buggy source:
@Override protected Object formBackingObject(HttpServletRequest request) throws Exception {
  CommandObject command=new CommandObject();
  if (Context.isAuthenticated()) {
    ReportDefinitionService rds=Context.getService(ReportDefinitionService.class);
    ReportService reportService=Context.getService(ReportService.class);
    if (StringUtils.hasText(request.getParameter("String_Node_Str"))) {
      ReportRequest req=reportService.getReportRequestByUuid(request.getParameter("String_Node_Str"));
      command.setReportDefinition(rds.getDefinitionByUuid(req.getReportDefinition().getParameterizable().getUuid()));
      for (      Map.Entry<String,Object> param : req.getReportDefinition().getParameterMappings().entrySet()) {
        Object value=param.getValue();
        if (value != null && EvaluationUtil.isExpression(value.toString())) {
          command.getExpressions().put(param.getKey(),(String)value);
          value="String_Node_Str";
        }
        command.getUserEnteredParams().put(param.getKey(),value);
      }
      command.setSelectedRenderer(req.getRenderingMode().getDescriptor());
    }
 else     if (StringUtils.hasText(request.getParameter("String_Node_Str"))) {
      String reqUuid=request.getParameter("String_Node_Str");
      ReportRequest rr=reportService.getReportRequestByUuid(reqUuid);
      command.setExistingRequestUuid(reqUuid);
      command.setReportDefinition(rr.getReportDefinition().getParameterizable());
      command.setUserEnteredParams(rr.getReportDefinition().getParameterMappings());
      command.setBaseCohort(rr.getBaseCohort());
      command.setSelectedRenderer(rr.getRenderingMode().getDescriptor());
      command.setSchedule(rr.getSchedule());
    }
 else {
      String uuid=request.getParameter("String_Node_Str");
      ReportDefinition reportDefinition=rds.getDefinitionByUuid(uuid);
      command.setReportDefinition(reportDefinition);
    }
    command.setRenderingModes(reportService.getRenderingModes(command.getReportDefinition()));
  }
  return command;
}

Fixed version (ground truth):
@Override protected Object formBackingObject(HttpServletRequest request) throws Exception {
  CommandObject command=new CommandObject();
  if (Context.isAuthenticated()) {
    ReportDefinitionService rds=Context.getService(ReportDefinitionService.class);
    ReportService reportService=Context.getService(ReportService.class);
    if (StringUtils.hasText(request.getParameter("String_Node_Str"))) {
      ReportRequest req=reportService.getReportRequestByUuid(request.getParameter("String_Node_Str"));
      command.setReportDefinition(rds.getDefinitionByUuid(req.getReportDefinition().getParameterizable().getUuid()));
      for (      Map.Entry<String,Object> param : req.getReportDefinition().getParameterMappings().entrySet()) {
        Object value=param.getValue();
        if (value != null && EvaluationUtil.isExpression(value.toString())) {
          command.getExpressions().put(param.getKey(),(String)value);
          value="String_Node_Str";
        }
        command.getUserEnteredParams().put(param.getKey(),value);
      }
      command.setSelectedRenderer(req.getRenderingMode().getDescriptor());
    }
 else     if (StringUtils.hasText(request.getParameter("String_Node_Str"))) {
      String reqUuid=request.getParameter("String_Node_Str");
      ReportRequest rr=reportService.getReportRequestByUuid(reqUuid);
      command.setExistingRequestUuid(reqUuid);
      command.setReportDefinition(rr.getReportDefinition().getParameterizable());
      command.setUserEnteredParams(rr.getReportDefinition().getParameterMappings());
      command.setBaseCohort(rr.getBaseCohort());
      command.setSelectedRenderer(rr.getRenderingMode().getDescriptor());
      command.setSchedule(rr.getSchedule());
    }
 else {
      String uuid=request.getParameter("String_Node_Str");
      ReportDefinition reportDefinition=rds.getDefinitionByUuid(uuid);
      command.setReportDefinition(reportDefinition);
      for (      Parameter p : reportDefinition.getParameters()) {
        if (p.getDefaultValue() != null) {
          command.getUserEnteredParams().put(p.getName(),p.getDefaultValue());
        }
      }
    }
    command.setRenderingModes(reportService.getRenderingModes(command.getReportDefinition()));
  }
  return command;
}