Product Variant no pass categories/tag

Using my Dolibarr
1

In 10.0.0 Alpha (last from git )

I have create a
Product
Category/Tag
Variant
Custom field a (checkbox)
Custom field b (checkbox)

Now insert a product with “Variant” plus “Custom field a” and “Custom Field b”, also insert Category/Tag

Now when Go in the Variant Tab and create a Variant All Create Fine Also create the “Custom field a” and “Custom Field b” ( from Master)
BUT . NOT
Create the Category/Tag from Master (required add manualy )

Any have try this problem ? is a bug or dolibarr not create a variant with the Category/Tag of master ?

NOTE: In the Module > Tag/categories have set Link with parent tag/category automatically : yes

Thank you
Walter