Window dimensions doesn't change for android split screen

Description

After upgrading react-native from 0.62.2 to 0.63.3 I've met an issue that when I use split screen on my physical android device the dimensions for window doesn't change. It remains the same if I open the app in fullscreen, or split it with other app so it takes 1/2 or 2/3 or 1/3 of the screen space. I cannot tell exactly what react-native version got this broken, but I did test it both on 0.62.2 and 0.63.3 versions once again, so I am confident about this being an issue on latest react-native version

React Native version:

System:
OS: Windows 10 10.0.19041
CPU: (4) x64 Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz
Memory: 2.51 GB / 9.98 GB
Binaries:
Node: 14.5.0 - C:\Program Files\nodejs\node.EXE
Yarn: 1.22.0 - C:\Program Files (x86)\Yarn\bin\yarn.CMD
npm: 6.14.5 - C:\Program Files\nodejs\npm.CMD
Watchman: Not Found
SDKs:
Android SDK:
API Levels: 28, 29
Build Tools: 28.0.3, 29.0.2, 29.0.3
System Images: android-21 | Google APIs ARM EABI v7a, android-21 | Google APIs Intel x86 Atom_64, android-27 | Google APIs Intel x86 Atom, android-28 | Intel x86 Atom_64
Android NDK: Not Found
Windows SDK: Not Found
IDEs:
Android Studio: Not Found
Visual Studio: Not Found
Languages:
Java: Not Found
Python: Not Found
npmPackages:
@react-native-community/cli: Not Found
react: 16.13.1 => 16.13.1
react-native: 0.63.3 => 0.63.3
react-native-windows: Not Found

Steps To Reproduce

I've left the code example down here, copy it and paste in App component of newly initializated react-native project on 0.63.3 version and try to open the app in fullscreen and split-screen, see the window height being the same(vertical split-screen).

Expected Results

Dimensions.get('window').height AND useWindowDimensions hook must return different results for app being resized by using split-screen, but it returns the same value on & on, but it works as expected in 0.62.2

Snack, code example, screenshot, or link to a repository:

  console.log('manual get height:', Dimensions.get('window').height);
  const {height} = useWindowDimensions();
  console.log('useWindowDimensions hook height:', height);

Reproduziere das Problem auf einem Android-Gerät mit den bereitgestellten Beispielen für Dimensions.get('window') und useWindowDimensions und vergleiche dabei das Verhalten im geteilten Bildschirm in React Native 0.63.3 mit 0.62.2. Verfolge die Einstiegspunkte von Dimensions und useWindowDimensions, um zu ermitteln, an welcher Stelle sich die Aktualisierungen der Fenstergröße unterscheiden; abgeschlossen ist die Aufgabe, wenn beide APIs die angepasste Höhe des geteilten Bildschirms melden.