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Side Menu Long-Press Alert Not Showing on Android

Metadata

  • Date: 2026-05-26
  • Status: fixed
  • Severity: medium
  • Related issue/ticket: feature/chat-delete-action
  • Owner: N/A

About

Overview: - Long-pressing a conversation item in the side menu Modal does not open an Alert dialog with a Delete option on Android. - Delete is the only way for users to remove chat conversations from the side menu, so the failure makes the feature completely non-functional on Android.

Technical Questions: - Root cause: Alert.alert() on Android uses the Activity window context, not the Modal window context. React Native's Modal on Android creates a separate Dialog window; any Alert launched from inside that window is presented to the Activity's window stack and is blocked or invisible behind the Modal. This is a documented React Native Android bug present since at least RN 0.60. - Secondary risk: FlatList on Android has aggressive touch-slop detection. A tiny finger movement during the long-press gesture (which has a 500 ms default hold time) can trigger scroll cancellation before onLongPress fires. - The backdrop Pressable (absoluteFill) is rendered before the Animated.View panel in the tree, so panel touches correctly reach inner Pressable items — this is NOT the root cause. - No existing bug log for this exact failure signature was found in docs/bugs/.

Resources: - main/app/components/side-menu.tsx — onLongPress calling Alert.alert() - main/app/app/index.tsx — handleDeleteConversation wiring - React Native GitHub issue #10471 (Alert inside Modal on Android)

Steps to cause failure

flowchart LR
  A[Open side menu] --> B[Long-press conversation item]
  B --> C[onLongPress fires Alert.alert]
  C --> D{Android window layer}
  D -->|Alert targets Activity window| E[Alert blocked by Modal window]
  E --> F[Nothing visible to user]

System

flowchart TD
  Index[index.tsx] -->|renders| SideMenu[SideMenu component]
  SideMenu -->|wraps in| Modal[RN Modal - separate Android Dialog window]
  Modal -->|renders| Panel[Animated.View panel]
  Panel -->|renders| FlatList
  FlatList -->|renderItem| Pressable[conversation Pressable]
  Pressable -->|onLongPress| Alert[Alert.alert - Activity window]
  Alert -.blocked.-> Modal

Long-press calls Alert.alert() which targets the Android Activity window. The Modal runs in its own Dialog window on Android, so the Alert never appears on top of the Modal.

Reproduction Details

  1. Build and run the app on Android (physical device or emulator).
  2. Open the side menu (tap the hamburger icon).
  3. Wait for at least one conversation to appear in the list.
  4. Long-press (hold ~500ms) on any conversation item.
  5. Observe: no Alert dialog appears. Nothing happens.

Reproduction test (unit preferred): main/app/__tests__/side-menu.test.tsx

Notes for PR

Root cause: Alert.alert() is incompatible with Android Modal windows because they use separate window contexts. The fix replaces Alert.alert() with an in-component action sheet overlay rendered entirely inside the Animated.View panel. State variable pendingDeleteItem holds the conversation item awaiting confirmation. The overlay renders a "Delete" and "Cancel" row absolutely positioned inside the panel, avoiding any cross-window issues. delayLongPress={400} is added to reduce the gesture window and scrollEnabled={false} is NOT used (would break scrolling); instead the FlatList is left as-is since the gesture conflict is secondary to the Alert bug.

Audit Log

ID Action Note Context
1 Create audit log Initialize investigation Feature branch feature/chat-delete-action
2 Read side-menu.tsx Confirmed Alert.alert() called inside Modal Primary suspect confirmed
3 Read index.tsx Confirmed wiring correct — bug is entirely in side-menu.tsx
4 Root cause identified Alert.alert() on Android targets Activity window, blocked by Modal's Dialog window RN known issue
5 Write failing test side-menu.test.tsx — long-press fires onDeleteConversation via in-component overlay Test written before fix
6 Apply fix Replace Alert.alert() with pendingDeleteItem state + absolute overlay inside Animated.View
7 Verify test passes Test confirms overlay renders and Delete fires callback

Verification

  • [x] Reproduced failure before fix
  • [x] Reproduction test fails before fix
  • [x] Root cause identified with evidence
  • [x] Fix applied at source (no workaround-only patch)
  • [x] Reproduction test passes after fix
  • [x] Reproduction path now passes
  • [x] Regression test added/updated
  • [x] Verified no duplicate solved-bug log exists for same root cause