Android: handleBackPress throws "Could not get native view tag" on hardware back during sheet teardown (race)

[sagnik2001]

Before submitting a new issue

• I tested using the latest version of the library.
• I tested using a supported version of React Native.
• I checked for existing issues that might answer my question.

Bug Summary

On Android (New Architecture / Fabric), pressing the hardware back button while a presented sheet's native view is being torn down throws Error: Could not get native view tag. It's caught by RN's BackHandler emit and surfaces as a non-fatal in Crashlytics, but the back press silently no-ops and it pollutes crash reporting.
Introduced by #580, which routes hardware back through BackHandler.addEventListener('hardwareBackPress', this.handleBackPress).

The subscription is added in onDidPresent and only removed in onDidDismiss / componentWillUnmount. There is a window where the sheet's native view is detached (e.g. the host screen is popped/unmounted by navigation) before onDidDismiss runs to remove the subscription. In that window:

isPresented and isSheetVisible are both still true, so handleBackPress does not early-return, and
findNodeHandle(this.nativeRef.current) returns null
so the get handle() getter throws:

private get handle(): number {
const nodeHandle = findNodeHandle(this.nativeRef.current);
if (nodeHandle == null || nodeHandle === -1) {
throw new Error('Could not get native view tag'); // <-- thrown from BackHandler callback
}
return nodeHandle;
}

private handleBackPress(): boolean {
if (!this.isPresented || !this.isSheetVisible) return false;
TrueSheetModule?.handleBackPress(this.handle); // <-- reads throwing getter
return this.props.onBackPress?.() ?? true;
}

Affected Platforms

• iOS
• Android
• Web
• Other

Library Version

3.10.0

Environment Info

React Native: 0.83.1, New Architecture (Fabric) enabled
Platform: Android only
Repro frequency increases on low-end devices (seen on a Redmi 9A / M2006C3MII, Helio G25)

Steps to Reproduce

It's a timing race, so it's flaky by hand (easier on a slow device / CPU-throttled emulator):

1. Present a sheet hosted in a navigation screen.
2. From inside the sheet, trigger navigation that unmounts the host screen without dismissing the sheet first.
3. Spam the hardware back button during the transition.

Repro

https://github.com/sagnik2001/rn-true-sheet-backpress-repro

Additional Context

Resolve the node handle directly in handleBackPress and bail out cleanly if it's unavailable, instead of relying on the throwing getter:

private handleBackPress(): boolean {
if (!this.isPresented || !this.isSheetVisible) return false;

• TrueSheetModule?.handleBackPress(this.handle);

• // The native view can be detached (e.g. host screen unmounted by navigation)
• // before onDidDismiss removes this subscription. In that window the tag is
• // gone — treat back press as a no-op instead of throwing.
• const nodeHandle = findNodeHandle(this.nativeRef.current);
• if (nodeHandle == null || nodeHandle === -1) return false;
• TrueSheetModule?.handleBackPress(nodeHandle);
  return this.props.onBackPress?.() ?? true;
  }