Product variant ID drop down list in PO

Good day,

I am facing a really strange scenario which is:

I created a product master, with variants, and then I have released them, and validated them as well.

Now when I issue a purchase order, I select the item number I created, and move to the variant field, but when I click the drop down menu, I see the released variants, but when I select one of them, I get nothing in the variant field. (See attached)

Microsoft dynamics AX2012 R3

Kernel version: 6.3.164.0

Application version: 6.3.164.0

Your help is really appreciated.