Physical Back button Closing whole application

Expected Result:

• Navigate to Previous page

Actual Result

• Closing whole application

To Reproduce :

Wrap that page's Scaffold in a WillPopScope widget

return new WillPopScope(
  onWillPop: () async {
    return true;
  },
  child: new Scaffold(
    …
  ),
);

GetX Version

get: ^5.0.0-beta.52

[✓] Flutter (Channel stable, 3.3.0, on Ubuntu 21.04 5.11.0-49-generic, locale en_IN)
• Flutter version 3.3.0 on channel stable at /home/pradeep/snap/flutter/common/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision ffccd96b62 (8 days ago), 2022-08-29 17:28:57 -0700
• Engine revision 5e9e0e0aa8
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[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0-rc1)
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• Platform android-33, build-tools 33.0.0-rc1
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• Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)
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[✓] Linux toolchain - develop for Linux desktop
• clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
• cmake version 3.10.2
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• pkg-config version 0.29.1

[✓] Android Studio (version 2021.2)
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• Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)

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• No issues found!