Active state is returning false on Firefox and Safari

### Are you submitting a **bug report** or a **feature request**?

bug report

### What is the current behavior?

When inside of a listener callback, meta's active state is returning false on Firefox and Safari.

### What is the expected behavior?

It should return true.

### Sandbox Link

https://codesandbox.io/s/zk2kmrwppm

### What's your environment?

OSX, Node v8.11.1, npm 5.6.0

```
"final-form": "^4.10.0",
"react-final-form": "^3.6.5",
"react-final-form-listeners": "^1.0.1",
```

### Other information

Active state is being used to determine if action is coming from a user interaction or a an onChange callback.