“Insert Virtual Functions" doesn't work with using-declaration type inside a different namespace

Qt Creator offers the "Insert Virtual Functions of Base Classes" option when a base type has virtual functions.

However, Qt Creator seemingly fails to parse base types behind a using-declaration in a different namespace. Here's the minimal reproducible code snippet:

namespace A {
struct Base
{
    virtual void foo() = 0;
};
} // namespace A

using A::Base;
// typedef A::Base Base;

struct Derived : Base
{};

Focus the text cursor on the Base after struct Derived :, then Press "Alt + Enter" to open the Refactor menu. The "Insert Virtual Functions" isn't available.

A workaround is to use typedef instead. In the above code snippet, comment out using-declaration and uncomment typedef, then open the Refactor menu, and "Insert Virtual Functions" will be available for use.

However, typedef doesn't work with class templates, using-declaration is required to alias a class template.