Standard Angular template doesn't run after Export to zip

🐛 bug report

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Description of the problem

Standard Angular template doesn't run properly after Export to zip. After npm start it throw the error:
ENOENT: no such file or directory, stat 'path\project_name\src\tsconfig.app.json'

How has this issue affected you? What are you trying to accomplish?

We are using CodeSandbox for the examples in our product (js library). We have Angular examples and want to allow our users to download zip and make changes locally. Also, we have some cases for our development too.

To Reproduce

• create sandbox based on the standard angular example
• export it to zip
• extract zip archive locally
• go the new project folder
• run npm install
• run npm start
• see the error: ENOENT: no such file or directory, stat 'path\project_name\src\tsconfig.app.json'

Link to sandbox: link (optional)

https://codesandbox.io/s/just-standard-angular-example-z78eo

Your Environment

Reproduce the failure from the linked Angular sandbox by exporting it, extracting the archive, running npm install, and then npm start. Inspect the exported project around src/tsconfig.app.json; done means the extracted standard Angular project starts successfully without the ENOENT error.