I am experiencing a critical issue where the soft keyboard immediately dismisses (within ~200ms) after a user taps a TextField. This prevents any text input and effectively blocks the user flow.

The Bug:

1. User taps the TextField.

2. The keyboard begins to animate up.

3. Before completing the animation, the keyboard "bounces" and closes automatically.

4. The TextField loses focus immediately.

Devices & OS Versions Affected:

• vivo X300 / Motorola Edge 50 Pro: Android 16 Beta (API 36)

• OnePlus 11: OxygenOS 16.0.3.500

• realme 9 Pro+: Android 14 (showing similar regression)

Technical Context: This appears to be related to the mandatory Edge-to-Edge enforcement in Android 16. As the keyboard resizes the window, the "Window Inset" transition seems to trigger a layout collision or a "pointer cancel" event that Flutter interprets as a request to unfocus.

What I have tried:

• Defining TextEditingController and FocusNode in initState (to prevent rebuild-related focus loss).

• Setting resizeToAvoidBottomInset: true on the Scaffold.

• Wrapping the input area in a SafeArea and SingleChildScrollView.

• Testing both adjustResize and adjustPan in the AndroidManifest.xml.

• Removing background GestureDetectors to rule out accidental unfocus() calls.

import 'package:flutter/material.dart';

void main() => runApp(const MaterialApp(home: LoginScreen()));

class LoginScreen extends StatefulWidget {
  const LoginScreen({super.key});
  @override
  State createState() => _LoginScreenState();
}

class _LoginScreenState extends State {
  final FocusNode _focusNode = FocusNode();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      resizeToAvoidBottomInset: true,
      body: SafeArea(
        child: SingleChildScrollView(
          child: Column(
            children: [
              const SizedBox(height: 300), // Push field toward bottom
              TextField(
                focusNode: _focusNode,
                decoration: const InputDecoration(hintText: "Enter Mobile Number"),
              ),
            ],
          ),
        ),
      ),
    );
  }
}