TuskCode

> Thanks for reporting this. Please provide a sample application showing the issue by forking the following CodeSandbox (https://codesandbox.io/s/github/marmelab/react-admin/tree/master/examples/simple). I had some problems with CodeSandBox, so I created a github...

I just saw that codesandbox manages to start every github project, so you can see the problem here: https://codesandbox.io/s/github/tuskcode/react-admin-test (sorry closed by mistake)