I have a clean installation of an expo app and I noticed some weird behaviour. While testing the App on the Expo App on iOS 11, I turned the phone landscape and saw the status bar move with the orientation even though the orientation is set to portrait in app.json. Also because of this, the tab navigation shrinks too.

Environment

System:
    OS: macOS 10.14
    Shell: 3.2.57 - /bin/bash
Binaries:
    Node: 11.4.0 - ~/.nvm/versions/node/v11.4.0/bin/node
    npm: 6.5.0 - ~/.nvm/versions/node/v11.4.0/bin/npm
IDEs:
    Xcode: 10.1/10B61 - /usr/bin/xcodebuild
npmPackages:
    expo: ^31.0.3 => 31.0.6 
    react: 16.6.3 => 16.6.3 
    react-native: ^0.57.8 => 0.57.8 
    react-navigation: ^3.0.8 => 3.0.8
App:
    iOS: 11

Steps to Reproduce

1. Turn the device landscape

Expected Behavior

The status bar should stay in a portrait orientation if the device is moved into a landscape orientation.

Actual Behavior

The status bar changes orientation to landscape.

Reproducible Demo