[QBS] Unable to remove file that matches wildcard pattern.

1. Create new Non-Qt Project as Plain C++ Application using qbs as a build system.
2. Open .qbs file and set CppApplication.files property to "*.cpp"
3. Add new C++ file Source file using Project tree widget on the left.
4. Now remove it selecting checkbox "Delete file permanently".

Here you should get following error:

Failure removing files from product 'test'.
The following files cannot be removed from the project file, because they match wildcard patterns: /Users/dvolosnykh/Development/hobby/qt/test/test.cpp

PS. This is true for Group.files property as well.