Wrong nested project's .qbs file in project tree

The Qt Creator shows the wrong nested project's .qbs file in the project tree. I would except to see Sub/Sub.qbs there, but the Qt Creator shows Root.qbs. Sub/Sub.qbs is not in the tree anywhere.

My simple test project is:

// File Root.qbs:
import qbs.base 1.0
Project {
name: "Root"
references: [ "Sub/Sub.qbs" ]
}

// File Sub/Sub.qbs:
import qbs.base 1.0
Project {
name: "Sub"
references: [ "Product/Product.qbs" ]
}

// File Sub/Product/Product.qbs:
import qbs.base 1.0
CppApplication {
files: [ "main.cpp" ]
}