Tapping to reposition the cursor in the reply composer on Android selected everything from the cursor to the tap point instead of moving the cursor. Root cause is flutter/flutter#184744: Gboard sends a shift key-up while its meta state still reports shift held, and the 3.38 engine synthesizes a phantom ShiftRight key-down it never releases, so every subsequent tap in any text field is treated as shift+tap. The state is per-process, which is why the reply composer (long-lived poisoned process) felt always-broken while the post body field seemed fine. Fixed upstream in Flutter 3.44+ (PR #185292); verified side-by-side on a physical Samsung device: the 3.38.6 store build reproduces, this build does not. Changes: - Flutter SDK 3.38.6 -> 3.47.2 (installed via Homebrew cask) - Android toolchain minimums required by Flutter 3.47: Gradle wrapper 8.11.1 -> 8.14.3, AGP 8.9.1 -> 8.11.1, Kotlin 2.1.0 -> 2.2.20 - Migrate kotlinOptions{jvmTarget} to the compilerOptions DSL in android/app/build.gradle.kts and android/build.gradle.kts (hard error under KGP 2.2) - sentry_flutter ^8.10.1 -> ^9.6.0 (8.x pins Kotlin language 1.6, which KGP 2.2 no longer compiles); attachViewHierarchy is experimental in 9.x, kept with an ignore comment in main.dart - Flutter-migrator auto-edits: gradle.properties builtInKotlin/newDsl opt-outs, analysis_options build/platform excludes, iOS project updates (FlutterImplicitEngineDelegate plugin registration, scheme/pbxproj), SwiftPM Package.resolved lockfiles - iOS minimum deployment target raised 13.0 -> 15.0 by the migrator; the next store release drops iOS 13/14 devices Note: after this lands, run `flutter clean` before the first `flutter test` on an existing checkout - stale ink_sparkle shader artifacts from the old engine fail ~17 tests with a spurious asset verification error. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EBTcMrcEydtKfo3p46dLLm