Issue Type: Bug

I have an index.js file with two classes in ( I can share the github repo if that's useful)

class Field {...}

class Builder {...}

I am able to right click on the class name, select Refactor and then select Move to new file. However, when I do that, nothing happens. There are no errors in the developer tools, but no code is changed or new files created.

It's worth noting that other refactors (highlight some code + extract method) do work just fine.

I am running code with --disable-extensions to ensure it's not a problem with a package.

VS Code version: Code 1.24.0 (6a6e02c, 2018-06-06T17:30:30.113Z)
OS version: Darwin x64 16.7.0