Empty terminal when task has "reveal: never"

I have this task:

```json
{
  "type": "npm",
  "script": "watch",
  "problemMatcher": "$gulp-tsc",
  "isBackground": true,
  "presentation": {
    "reveal": "never"
  },
  "group": {
    "kind": "build",
    "isDefault": true
  }
}
```

- Run the task
- Open the terminal
- There is no text in the terminal