Surprising "ActiveProject" in project wizards

1. In "Edit" -> "Preferences..." -> "Build & Run" -> "Default Build Properties", set a default build directory which uses:

   %{ActiveProject:Name}
   

   I used:

   /tmp/%{ActiveProject:Name}-build
   

   because I don't want the builds to stay on my hard disk.

2. Open and configure an existing project.
   It uses the expected path.
3. Create a new project using Creator's wizards.
   Expected: The wizard uses the name of the project it's currently creating.
   Actual: The wizard's "Kit Selection" page uses the name of the other, existing project:
   

The same happens when using

%{CurrentDocument:Project:Name}

instead. I don't see a way to set a default build directory containing the project's name without breaking the wizards.