mvce-rn-screens-header-btn

To repro:

1. Clone this repo,
2. yarn
3. npx pod-install

Then run the app on an iPad or on iPhone, and rotating the device will cause the custom header button to disappear.

Using:

    "@react-native-community/masked-view": "^0.1.10",
    "@react-navigation/native": "^5.7.6",
    "react": "16.13.1",
    "react-native": "0.63.3",
    "react-native-gesture-handler": "^1.8.0",
    "react-native-reanimated": "^1.13.1",
    "react-native-safe-area-context": "^3.1.8",
    "react-native-screens": "^2.11.0"