Qunatity discount table not change with combination

[jacksfregio]

Hi,

My site use ps 1.7.4.4.

There is a problem with quantity discount table (specific price) for products with combinations.

When I open the product page for the first time and I choose a combination, the table changes accordingly, but if I choose another combination, the table doesn't change anymore.

I made a plain installation in localhost of ps 1.7.4.4 and the problem is the same.

Thanks for the help

Edited November 14, 2018 by jacksfregio (see edit history)