storybook bug?

package.json

{
  "name": "grumshi",
  "version": "0.1.0",
  "private": true,
  "devDependencies": {
    "@kadira/storybook": "^2.21.0",
    "algebra.js": "^0.2.5",
    "chai": "^3.5.0",
    "enzyme": "^2.4.1",
    "react-addons-test-utils": "^15.3.2",
    "react-dom": "^15.3.1",
    "react-scripts": "0.4.1",
    "react-test-renderer": "^15.3.2"
  },
  "dependencies": {
    "immutable": "^3.8.1",
    "lodash": "^4.16.4",
    "react": "15.3.1",
    "react-dom": "^15.3.1",
    "react-helmet": "^3.1.0",
    "react-redux": "^4.4.5",
    "react-router": "^2.7.0",
    "react-router-redux": "^4.0.5",
    "react-traverse": "0.0.3",
    "redux": "^3.6.0",
    "victor": "^1.1.0"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject",
    "storybook": "start-storybook -p 9009",
    "build-storybook": "build-storybook"
  },
  "eslintConfig": {
    "extends": "./node_modules/react-scripts/config/eslint.js"
  }
}