Why Chutzpah does not recognize all TypeScript tests?

I have a project with the following chutzpah.json:

{
  "Framework": "jasmine",
  "TestHarnessReferenceMode": "AMD",
  "TestHarnessLocationMode": "SettingsFileAdjacent",
  "EnableTestFileBatching": true,

  "References": [
    { "Path": "node_modules/es6-shim/es6-shim.min.js" },
    { "Path": "node_modules/http://ift.tt/1KReLA4" },
    { "Path": "node_modules/reflect-metadata/Reflect.js" },
    { "Path": "node_modules/systemjs/dist/system.js" },
    { "Path": "system-config.js" }
  ],
  "CodeCoverageExcludes": ["node_modules/*"],
  "Tests": [
    { "Path": "app", "Includes": [ "*.spec.ts" ] }
  ]
}

and the following tests files

Test explorer just shows tests stored in the first file

If I try to run the the command of the VSTest I get the same result:

If I call the command setting the name of the file (e.g. "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\CommonExtensions\Microsoft\TestWindow\vstest.console.exe" app\InspectionDataView.spec.ts /UseVsixExtensions:true ), the tests in the file run.

Extra point:

I tried to run the test directly with Chutzpah.console.exe, this is what I got:

What am I missing here ?

Note: Using VS 2015 Update 3