We are currently investigating this incident.
When adding a web-accessible resource, like so in the `package.json`:
```
"webaccessibleresources": [
{
"resources": [
"sidebar.html"
],
"matches": [
"http:///",
"https:///"
]
}
]
```
The built manifest's `resources` is `[]` (empty) when in reality it should be the HTML file referenced in the `package.json`
