Module.additionalProductTypes does not work ?

According to the Module documentation, any tag from additionalProductTypes will be added to the type property of a product with a dependency on this module.

But it doesn't work.

Here is attached an example. If I understood correctly the effect of this property :

• the type property of app.qbs should be ["footag"], but it's empty.
• thus the Group item from app.qbs should be enabled, but it's not.