Error totals field

In a grid I want the total of a field. The field is not in the database. (see total_1,total_2,total_3)
But the sum is not correct (see total_4.png).

Totali_4.png

Totali_3.png

Totali_1.png

Totali_2.png

Just curious, is your field with decimals?

No. Is an integer

None has an idea? I think is a big bug

I have same problem, total is wrong, apparently is ignoring the last row