Product filter price results for modifiers - CS CART 3.01 bug or not?

Hello,



I created category with name “Buy by price”, I created price filter and added all categories to search in. I disabled filter for all categories and subcategories besides “Buy by price”. Till that point everything is fine.



So now I tested how the results are working and it gave me all products mixed up independantly on the price. Also the scale maximum price is showing the wrong number…



I am using product combinations for half products (so it means main price 0, and modifier is a product price), and other products (without combinations) have price.



So filtering results Is a bug? or it does not work with product combinations modifiers and price 0?