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+# PR Review: #33380 - [PR agent] Issue23892.ShellBackButtonShouldWorkOnLongPress - test fix
+
+**Date:** 2026-01-07 | **Issue:** [#33379](https://github.com/dotnet/maui/issues/33379) | **PR:** [#33380](https://github.com/dotnet/maui/pull/33380)
+
+## ✅ Final Recommendation: APPROVE
+
+| Phase | Status |
+|-------|--------|
+| Pre-Flight | ✅ COMPLETE |
+| 🧪 Tests | ✅ COMPLETE |
+| 🚦 Gate | ✅ PASSED |
+| 🔧 Fix | ✅ COMPLETE |
+| 📋 Report | ✅ COMPLETE |
+
+---
+
+<details>
+<summary><strong>📋 Issue Summary</strong></summary>
+
+**Issue #33379**: The UI test `Issue23892.ShellBackButtonShouldWorkOnLongPress` started failing after PR #32456 was merged.
+
+**Test Expectation**: `OnAppearing count: 2`
+**Test Actual**: `OnAppearing count: 1`
+
+**Original Issue #23892**: Using long-press navigation on the iOS back button in Shell does not update `Shell.Current.CurrentPage`. The `Navigated` and `Navigating` events don't fire.
+
+**Platforms Affected:**
+- [x] iOS
+- [ ] Android
+- [ ] Windows
+- [ ] MacCatalyst
+
+</details>
+
+<details>
+<summary><strong>🔍 Deep Regression Analysis - Full Timeline</strong></summary>
+
+## The Regression Chain
+
+This PR addresses a **double regression** - the same functionality was broken twice by subsequent PRs.
+
+### Timeline of Changes to `ShellSectionRenderer.cs`
+
+| Date | PR | Purpose | Key Change | Broke Long-Press? |
+|------|-----|---------|------------|-------------------|
+| Feb 2025 | #24003 | Fix #23892 (long-press back) | Added `_popRequested` flag + `DidPopItem` | ✅ Fixed it |
+| Jul 2025 | #29825 | Fix #29798/#30280 (tab blank issue) | **Removed** `_popRequested`, expanded `DidPopItem` with manual sync | ❌ **Broke it** |
+| Jan 2026 | #32456 | Fix #32425 (navigation hang) | Added null checks, changed `ElementForViewController` | ❌ Maintained broken state |
+
+### PR #24003 - The Original Fix (Feb 2025)
+
+**Problem solved**: Long-press back button didn't trigger navigation events.
+
+**Solution**: Added `_popRequested` flag to distinguish:
+- **User-initiated navigation** (long-press): Call `SendPop()` → triggers `GoToAsync("..")` → fires `OnAppearing`
+- **Programmatic navigation** (code): Skip `SendPop()` to avoid double-navigation
+
+**Key code added**:
+```csharp
+bool _popRequested;
+
+bool DidPopItem(UINavigationBar _, UINavigationItem __)
+    => _popRequested || SendPop();  // If not requested, call SendPop
+```
+
+### PR #29825 - The First Regression (Jul 2025)
+
+**Problem solved**: Tab becomes blank after specific navigation pattern (pop via tab tap, then navigate again, then back).
+
+**What went wrong**: The PR author expanded `DidPopItem` with manual stack synchronization logic (`_shellSection.SyncStackDownTo()`) and **removed the `_popRequested` flag entirely**.
+
+**Result**: `DidPopItem` now ALWAYS does manual sync, never calls `SendPop()` for user-initiated navigation. Long-press navigation stopped triggering `OnAppearing`.
+
+**Why the test didn't catch it**: Unclear - possibly the test wasn't run or was flaky at the time.
+
+### PR #32456 - Maintained the Broken State (Jan 2026)
+
+**Problem solved**: Navigation hangs after rapidly opening/closing pages (iOS 26 specific).
+
+**What it did**: Added null checks to prevent crashes in `DidPopItem` and changed `ElementForViewController` pattern matching.
+
+**Maintained the regression**: The PR kept the broken `DidPopItem` logic from #29825 (no `_popRequested` flag).
+
+**This triggered the test failure**: When #32456 merged to `inflight/candidate`, the existing `Issue23892` test started failing.
+
+</details>
+
+<details>
+<summary><strong>📁 Files Changed</strong></summary>
+
+| File | Type | Changes |
+|------|------|---------|
+| `src/Controls/src/Core/Compatibility/Handlers/Shell/iOS/ShellSectionRenderer.cs` | Fix | -20 lines (simplified) |
+| `src/Controls/src/Core/Shell/ShellSection.cs` | Fix | -44 lines (removed `SyncStackDownTo`) |
+
+**Net change:** -49 lines (code reduction)
+
+</details>
+
+<details>
+<summary><strong>💬 PR Discussion Summary</strong></summary>
+
+**Key Comments:**
+- Issue #33379 was filed by @sheiksyedm pointing to the test failure after #32456 merged
+- @kubaflo (author of both #32456 and #33380) created this fix
+
+**Reviewer Feedback:**
+- None yet
+
+**Disagreements to Investigate:**
+| File:Line | Reviewer Says | Author Says | Status |
+|-----------|---------------|-------------|--------|
+| (none) | | | |
+
+**Author Uncertainty:**
+- None expressed
+
+</details>
+
+<details>
+<summary><strong>🧪 Tests</strong></summary>
+
+**Status**: ✅ COMPLETE
+
+- [x] PR includes UI tests (existing test from #24003)
+- [x] Tests reproduce the issue
+- [x] Tests follow naming convention (`IssueXXXXX`) ✅
+
+**Test Files:**
+- HostApp: `src/Controls/tests/TestCases.HostApp/Issues/Issue23892.cs`
+- NUnit: `src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue23892.cs`
+
+</details>
+
+<details>
+<summary><strong>🚦 Gate - Test Verification</strong></summary>
+
+**Status**: ✅ PASSED
+
+- [x] Tests PASS with fix
+
+**Test Run:**
+```
+Platform:     iOS
+Test Filter:  FullyQualifiedName~Issue23892
+Result:       SUCCESS ✅
+```
+
+**Result:** PASSED ✅ - The `Issue23892.ShellBackButtonShouldWorkOnLongPress` test now passes with the PR's fix.
+
+</details>
+
+<details>
+<summary><strong>🔧 Fix Candidates</strong></summary>
+
+**Status**: ✅ COMPLETE
+
+| # | Source | Approach | Test Result | Files Changed | Notes |
+|---|--------|----------|-------------|---------------|-------|
+| 1 | try-fix | Simplified `DidPopItem`: Always call `SendPop()` when stacks are out of sync | ✅ PASS (Issue23892 + Issue29798 + Issue21119) | `ShellSectionRenderer.cs` (-17, +6) | **Simpler AND works!** |
+| PR | PR #33380 (original) | Restore `_popRequested` flag + preserve manual sync from #29825/#32456 | ✅ PASS (Gate) | `ShellSectionRenderer.cs` (+11) | Superseded by update |
+| PR | PR #33380 (updated) | **Adopted try-fix #1** - Stack sync detection, removed `SyncStackDownTo` | ✅ PASS (CI pending) | `ShellSectionRenderer.cs`, `ShellSection.cs` (-49 net) | **CURRENT - matches recommendation** |
+
+**Update (2026-01-08):** Developer @kubaflo adopted the simpler approach recommended in try-fix #1.
+
+**Exhausted:** Yes
+**Selected Fix:** PR #33380 (updated) - Now implements the recommended simpler approach
+
+</details>
+
+---
+
+## 📋 Final Report
+
+### Recommendation: ✅ APPROVE
+
+**Update (2026-01-08):** Developer @kubaflo has adopted the recommended simpler approach.
+
+### Changes Made by Developer
+
+The PR now implements exactly the simplified stack-sync detection approach:
+
+**ShellSectionRenderer.cs** - Simplified `DidPopItem`:
+```csharp
+bool DidPopItem(UINavigationBar _, UINavigationItem __)
+{
+    if (_shellSection?.Stack is null || NavigationBar?.Items is null)
+        return true;
+
+    // If stacks are in sync, nothing to do
+    if (_shellSection.Stack.Count == NavigationBar.Items.Length)
+        return true;
+
+    // Stacks out of sync = user-initiated navigation
+    return SendPop();
+}
+```
+
+**ShellSection.cs** - Removed `SyncStackDownTo` method (44 lines deleted)
+
+### Why This Approach Works
+
+| Scenario | What Happens |
+|----------|--------------|
+| **Tab tap pop** | Shell updates stack BEFORE `DidPopItem` → stacks ARE in sync → returns early (no `SendPop()`) |
+| **Long-press back** | iOS pops directly → Shell stack NOT updated → stacks out of sync → calls `SendPop()` |
+
+### Benefits of Updated PR
+
+| Aspect | Before (Original PR) | After (Updated PR) |
+|--------|---------------------|-------------------|
+| Lines changed | +11 | **-49 net** |
+| New fields | `_popRequested` bool | **None (stateless)** |
+| Complexity | State tracking | **Simple sync check** |
+| `SyncStackDownTo` | Preserved | **Removed** |
+
+### Conclusion
+
+The PR now:
+- ✅ Fixes Issue #33379 (long-press back navigation)
+- ✅ Uses the simpler stateless approach
+- ✅ Removes 49 lines of code
+- ✅ No new state tracking required
+- ⏳ Pending CI verification
+
+**Approve once CI passes.**u