Aggregate component third prefix seems to be ignored?

export const aggregateRemainingAmount = new TableAggregate<{
  Key: [Id<"students">, number, number];
  DataModel: DataModel;
  TableName: "bills";
}>(components.aggregateBillRemainingAmount, {
  sortKey: (bill) => [
    bill.studentId,
    bill.academicYearStartDate,
    bill.startDate,
  ],
  sumValue: (bill) => bill.remainingAmount,
});

await aggregateRemainingAmount.sum(ctx, {
  bounds: {
    lower: {
      inclusive: true,
      key: [
        student._id,
        Number.NEGATIVE_INFINITY,
        Number.NEGATIVE_INFINITY,
      ],
    },
    upper: {
      inclusive: true,
      key: [student._id, Date.now(), Date.now()],
    },
  },
});