PoE Trade - PSEUDO # Crafted Modifiers filter functionality

Let say I want to filter out items that have been crafted on ( because I might want to add one myself) setting the filter max=0 to "Pseudo # Crafted Modifiers" will yield no results.

On the other hand if I set min=3 I'll get items with "Can Have Up To 3 Crafted Modifiers" bench suffix with 2 other mods. So it seems to be working there.

Unless I misunderstand the filter's function; by setting max to 0 shouldn't it display items that haven't gone through the bench?

Regards