Can't select another category than "product catego

Hello,

here is what it seems a bug :
on hikamarket (with super user rights) when i chose another root category than "product category", when i save, and go back to edit the product, it is came back to "product category".

Thanks for the fast answer .
It sounds like a bug for us and our vendor however ...

In fact, here is the thing we want to do .
Sometimes, the vendor of the shop will create a special product for only one customer after receiving a request by email.
He will send the link by email of this product just create, and the customer will finish easily.
BUT , that product , automatically categorized in "product category" by your front component, will display that product in the root of my shop...

So everybody see that product, unlike just my customer.

So in backend of hikashop, that product would be hide , because in another category that "product cat".
Perfect for what we need.

So what's your solution for my vendor, who use hikamarket in frontend, and need to create a product only for one people, and send the link.??!
Thks in advance