Minor (hopefully simple) issue with Magical Knack

[Totino]

The trait "Magical Knack" requires the selection of a spellcasting class the give the benefit to, but it currently restricts the choice to classes that you have. You can pick up the trait at first level though and choose a spellcasting class that you do not yet have. So the dropdown should just always contain the list of all spellcasting classes from any products available to you.