According to https://support.microsoft.com/en-us/office/sumif-function-169b8c99-c05c-4483-a712-1697a653039b SUMIF function also accepts third, optional argument which will be used as a sum range if provided. Signature looks like:
SUMIF(range, criteria, [sum_range])
However, it seems like Handsontable doesn't support this option and uses only the first range if criteria succeed.
The original issue has been reported at https://github.com/ckeditor/ckeditor4/issues/4133
C1.True. There's something wrong with the calculation. We should get 30 in C1.
Most helpful comment
True. There's something wrong with the calculation. We should get
30inC1.