Issues

• FAST_FAIL_FATAL_APP_EXIT (0xc0000409) on first ReactNativeHost API call in Release/standalone builds — reproducible with minimal JS, on both 0.85.0-preview.1 and 0.84.0

  Needs: Triage 🔍
  microsoft/react-native-windows#16442 · Filter by author yifanCandy opened on Sep 13, 2026
  1

• Fabric: activating the window doesn't announce the window or the focused control to a screen reader

  Needs: Triage 🔍
  microsoft/react-native-windows#16435 · Filter by author alexoloopios opened on Sep 10, 2026

• Layout, involving negative margin, changes between debug and release builds

  bugNeeds: Triage 🔍
  Bug

  microsoft/react-native-windows#16410 · Filter by author shirakaba opened on Aug 30, 2026

• [Composition] Keyboard focus visual not shown when focus is set programmatically or via NavigateFocus into a newly-shown content island

  bugInvalid TriageNeeds: Triage 🔍
  Bug

  microsoft/react-native-windows#16368 · Filter by author srividyaramas opened on Aug 13, 2026

• [Fabric][Composition] Expose a non-mutating focusability API on  ComponentView  (e.g.  IsFocusable ) for FocusZone / single-tab-stop scenarios

  bugInvalid TriageNeeds: Triage 🔍
  Bug

  microsoft/react-native-windows#16363 · Filter by author srividyaramas opened on Aug 11, 2026

• Calculator sample CI (Upgrade) legs fail with MSB8036: Windows SDK 10.0.22621.0 not found on build agents

  Needs: Triage 🔍
  microsoft/react-native-windows#16362 · Filter by author anuagragith opened on Aug 10, 2026

• Native-API reference docs no longer regenerated - UpdateNativeApiDocs.ps1 broken since #15848 (WinRT API docs artifacts retired)

  bugDocumentationInvalid Triage
  microsoft/react-native-windows#16355 · Filter by author anuagragith opened on Aug 6, 2026

• [0.85] React Native DevTools "Performance" panel: recording a trace then Stop disconnects the app

  bugInvalid TriageNeeds: Triage 🔍
  Bug

  microsoft/react-native-windows#16354 · Filter by author anuagragith opened on Aug 6, 2026

• Fabric text is drawn with ClearType onto transparent composition surfaces, fringing thin glyphs

  Needs: Triage 🔍
  microsoft/react-native-windows#16340 · Filter by author FaithfulAudio opened on Jul 26, 2026

• Fabric touch input unreliable on real touch hardware: touch pointerdown carries button=-1 (presses ignored), and missed releases/capture loss strand active touches that wedge press recognition app-wide

  Invalid TriageNeeds: Triage 🔍
  microsoft/react-native-windows#16332 · Filter by author FaithfulAudio opened on Jul 24, 2026

• Fabric TextInput never invokes the touch keyboard on focus in a WinAppSDK island app (windowless RichEdit) — keyboard never appears on a keyboard-less tablet

  Needs: Triage 🔍
  microsoft/react-native-windows#16331 · Filter by author FaithfulAudio opened on Jul 24, 2026

• [msvc] react-native-windows failed with warning C4864: expected 'template' keyword before dependent template name

  bugNeeds: Triage 🔍
  Bug

  microsoft/react-native-windows#16321 · Filter by author PhoebeHui opened on Jul 22, 2026
  1

• Fabric: core Switch renders but never fires onValueChange on mouse click (new architecture)

  Needs: Triage 🔍
  microsoft/react-native-windows#16316 · Filter by author FaithfulAudio opened on Jul 17, 2026

• Networking: fetch/XHR GETs can silently return stale cached responses — default HttpBaseProtocolFilter never sets CacheControl.ReadBehavior

  Needs: Triage 🔍
  microsoft/react-native-windows#16315 · Filter by author FaithfulAudio opened on Jul 17, 2026

• 0.85 Release Status

  Area: Release ProcessNeeds: Triage 🔍
  microsoft/react-native-windows#16312 · Filter by author anuagragith opened on Jul 15, 2026
  

• Permanent UI thread hang: unbounded ProcessDelayedPropsNodes retry loop when a native-driver animation targets a view absent from the Fabric registry

  Needs: Triage 🔍
  microsoft/react-native-windows#16309 · Filter by author tux2nicolae opened on Jul 13, 2026
  2

• Registered icon-font TTFs render blank glyphs until table checksums/table directory are recomputed — silent failure in the DWrite font path

  Needs: Triage 🔍
  microsoft/react-native-windows#16308 · Filter by author FaithfulAudio opened on Jul 11, 2026
  1

• Native Modal on new architecture opens a separate top-level OS window (DesktopPopupSiteBridge) — transparent flex:1 content measures 0x0, full-screen overlays impossible

  Needs: Triage 🔍
  microsoft/react-native-windows#16307 · Filter by author FaithfulAudio opened on Jul 11, 2026

• DirectWrite text layout cannot resolve font families whose names contain spaces — 'Material Icons' renders tofu, same font renamed 'MaterialIcons' renders

  Needs: Triage 🔍
  microsoft/react-native-windows#16306 · Filter by author FaithfulAudio opened on Jul 11, 2026
  1

• TextInput with no explicit backgroundColor paints the OS system window color (white strip on dark themes) — TxGetSysColor COLOR_WINDOW falls through to tomAutoColor

  Needs: Triage 🔍
  microsoft/react-native-windows#16305 · Filter by author FaithfulAudio opened on Jul 11, 2026

• 0.83.2 can't find @react-native-windows/find-dotnet-tools

  bugNeeds: Triage 🔍
  Bug

  microsoft/react-native-windows#16278 · Filter by author tido64 opened on Jun 23, 2026

• Dependency docs (both 0.81 and current 0.83) say VS 2022, but MinimumVisualStudioVersion=18.0 since 0.81.28 requires VS 2026

  bugNeeds: Triage 🔍
  Bug

  microsoft/react-native-windows#16275 · Filter by author AlexLablaiksSAP opened on Jun 18, 2026
  1

• init-windows fails silently with "unknown command" when pwsh.exe is missing; not documented in rnw-dependencies

  bugNeeds: Triage 🔍
  Bug

  microsoft/react-native-windows#16274 · Filter by author AlexLablaiksSAP opened on Jun 18, 2026

• Unfork NetworkIOAgent.cpp destructor and enableAgent API changes from 0.85 nightly integration

  Integration Follow-upNeeds: Triage 🔍
  Task

  microsoft/react-native-windows#16263 · Filter by author anuagragith opened on Jun 16, 2026

• Unfork AnimatedPropSerializer.cpp override added during 0.85 nightly integration

  Integration Follow-upNeeds: Triage 🔍
  Task

  microsoft/react-native-windows#16262 · Filter by author anuagragith opened on Jun 16, 2026