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[BUG] Samsung One UI: Overlay crashes and fails to re-lock after interacting with system biometric prompt #234

Description

@devx-aether

Environment Details:

  • Device: Samsung Galaxy A56
  • OS Version: One UI 8.5 (Android 16)

Feature Requests / Enhancements:

  1. Auto-Prompt Biometrics Option: Add an optional setting to trigger the native BiometricPrompt immediately upon intercepting a locked app, without requiring an extra tap on the fingerprint icon first.

Bug Description:

  1. When opening a locked application, the App Lock overlay appears showing the PIN keypad with a fingerprint icon at the top.
  2. Tapping the fingerprint icon calls OS BiometricPrompt dialog over the App Lock overlay.
  3. Tapping "Use PIN" on Samsung's system biometric dialog dismisses the biometric dialog and causes the App Lock overlay to lose window focus/crash.
  4. The target application is immediately brought to the foreground unlocked without requiring any PIN input.
  5. Furthermore, the app does not lock again and is left permanently unlocked.

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