BackgroundColor in loadingState is always white

The backgroundColor does not set the backgroundColor of the loadingView.
This color is hardcoded to white. It works only when i set useWebKit={false}. Which leads to a white flash when the WebView is initializing.

To Reproduce:
<WebView
style={{ backgroundColor: ‘#000000’ }}
ref={(ref) => this.webview = ref}
source={{ html }}
scrollEnabled={false}
mediaPlaybackRequiresUserAction={false}
allowsInlineMediaPlayback={true}
onShouldStartLoadWithRequest={this.onWebviewRedirect}
/>
Expected behavior:

The background should be the color defined via backgroundColor when the Webview is initializing.

Environment:

  • OS: iOS
  • OS version: 11.4
  • react-native version: 0.59.3
  • react-native-webview version: 5.7.0