Optaplanner ConstraintStream doesn't work

Question

I'm making an aircraft mechanic scheduling program using Opta Planner. So far, we have added many hard, soft, and medium constraints, but one does not work.

The constraints are the same as the code below.

private Constraint workPerMonth(ConstraintFactory constraintFactory) {
        return constraintFactory.forEach(MechanicAssignment.class)
        .groupBy(MechanicAssignment::getEmployee
        , MechanicAssignment::getWorkDate
        ,ConstraintCollectors.min(MechanicAssignment::getFlightWorkStartDateTime)
        ,ConstraintCollectors.max(MechanicAssignment::getFlightWorkEndDateTime))
        .groupBy((employee, work , min, max ) -> employee
        ,(employee, work, min, max ) -> work
        ,(employee,work, min,max ) -> workCodeCheckUtil.getWorkHour(workCodeCheckUtil.matchWorkCode(min, max)))
        .join(OffWork.class, Joiners.equal((employee, work, totalWorkMinute) -> employee.getEmpNo(), OffWork::getEmpNo))
        .filter((emp, work, totalWorkMinute, off) -> !off.getWorkCode().equals("WVC"))
        .groupBy((emp, work, totalWorkMinute, off) -> emp
        ,(emp, work, totalWorkMinute, off) -> Pair.of(work, totalWorkMinute)
        ,ConstraintCollectors.countQuad() 
        ,ConstraintCollectors.sum((emp, work, totalWorkMinute, off) -> (work.getIndexDay() == off.getTargetDate().getDayOfMonth()
        && work.getIndexMonth() == off.getTargetDate().getMonthValue()) ? 0 : 1   
        ))
        .groupBy((employee, work, offCount, notOff) -> Tripe.of(employee, work.getKey().getIndexMonth(), offCount)
        , ConstraintCollectors.sum((employee, work, offCount, notOff) -> notOff == offCount ? 1 : 0) 
        , ConstraintCollectors.sumLong(
            (employee, work, offCount, notOff) -> work.getValue()/60)
        // , ConstraintCollectors.countQuad()
        , ConstraintCollectors.countQuad()
        )

        .filter((employee, offCount, totalWorkMinute, assignCount) -> {

            LocalDate localDate = LocalDate.now().withMonth(employee.getSecond());
            YearMonth yearMonth = YearMonth.from(localDate);

            LocalDate lastDate = yearMonth.atEndOfMonth();

            int leftDay = lastDate.getDayOfMonth() - assignCount;

            int realOff = employee.getThird() - offCount;

            if ( realOff*8 + (totalWorkMinute + ((leftDay - 9 - realOff) * 4)) > 171)
            {
                return true;
            }

            return false;

        })

        .penalize(HardMediumSoftLongScore.ofHard(2))
        .asConstraint("cannot work more than 171 hours per month");
    }

Explanation of Constraint

realoff : actual off count
totalWorkMinute : Actual working hours
leftday : The number of days in a month minus the actual number of days worked

realOff*8 + (totalWorkMinute + ((leftDay - 9 - realOff) * 4))

When calculating this experession at last filtering function It should not exceed 171hours.

Result

Testing confirmed that there were datas that were exceeded 171 hours, but I confirmed that constraints were not violated. What am I doing wrong?

Since the group by function has more than 4 keys, I tupled it through the Pair and Tripe user interface.