HI, I am using the Product Properties in Product entity and add new OptionSet type property with multiple values.
Example :
Product : Zenmuse
Product Perperties: Industry (OptionSet)

But when I am setting up the value of the property. I am expecting the drop down (OptionSet) list in the Value field but this is free text field and accept any text.

Let me know if I missed any configuration or this is the standard behavior?