Submission errors with combination of subscription prop disable returned submission error

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

### What is the current behavior?
simple form with both feature, Submission errors and
`subscription={{ submitting: true, pristine: true }}` disable the returned submission error

[https://codesandbox.io/s/intelligent-pine-kotjt?file=/index.js](https://codesandbox.io/s/intelligent-pine-kotjt?file=/index.js)
### What is the expected behavior?
both feature should work together unless I missed something in the docs...
### Sandbox Link

### What's your environment?
```javascript
"final-form": "4.18.7",
"react-dom": "16.13.0",
"react": "16.13.0",
"react-final-form": "6.3.5",
```

### Other information