TV inputs not working in iOS 12.2 beta?
Updated to the latest 1.50 version today, but it appears that TV inputs aren't working correctly in the Home app. Having set them as such:

```
      "inputs": [
          {
            "appId": "youtube.leanback.v4",
            "name": "YouTube"
          },
          {
              "appId": "com.webos.app.tvguide",
              "name": "TV Guide"
            }
      ]
```

The inputs do show up in the accessory's settings screen (both default and custom inputs), but when clicking the Input button, the whole list is empty (see screenshots).

![img_2565](https://user-images.githubusercontent.com/2583235/51804624-d4def900-2263-11e9-9803-c52533475a5c.jpg)
![img_2566](https://user-images.githubusercontent.com/2583235/51804626-d4def900-2263-11e9-92bf-1c56c4daddd9.jpg)
