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[Bug]On GrapheneOS, touch is disabled after biometrics is enabled. Sometimes #101

@993782githbcom

Description

@993782githbcom

Bug Report

Description

System UI becomes non-responsive after invoking biometrics.

Sometimes after using biometric unlock, the System UI stops responding properly. Specifically, I cannot swipe left or right; I can only swipe up and down. This issue persists even after a system reboot.
​After some investigation, I suspect the issue is caused by a transparent, "floating window-like" element appearing after fingerprint recognition that obstructs touch inputs. While entering System Settings "refreshes" the UI and temporarily fixes it, the problem recurs the next time I unlock the device.

I suspect the app created a hidden interface/floating window/full-screen notification.

This applies regardless of whether biometric identification has been completed.

Steps to Reproduce

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  1. Start your coffee time
  2. Perform biometric identification

Expected Behavior

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Actual Behavior

The app interface cannot be touched. However, the notification bar can be pulled down. This freeze can be ended by turning off Coffee Time or going into Settings.

Screenshots or Videos

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Environment Details

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  • App Version: 2.2.0
  • Android Version: Android 16
  • Device Model: (e.g., Pixel 9 Pro fold
  • Rooted or Non-Rooted: No-rooted
  • Screen Orientation: all

Log Output

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Or use LogFox to capture logs from the device.

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