Issues

• [Feature] Diagnostics: enumerate Reactor hosts and their roots; tag component boundaries for inspectors

  enhancementneeds-triage
  microsoft/microsoft-ui-reactor#1314 · Filter by author azchohfi opened on Oct 2, 2026

• [Feature] Let apps replace the built-in error fallback that shows the full exception text

  microsoft/microsoft-ui-reactor#1291 · Filter by author d-date opened on Sep 28, 2026
  1

• reactor-build-and-check says mur is 'selfhost only', but mur.exe ships in the same skill-kit zip as that skill

  microsoft/microsoft-ui-reactor#1274 · Filter by author azchohfi opened on Sep 23, 2026

• mur check truncates diagnostics at 100 chars unconditionally, making long-path build failures unreadable

  microsoft/microsoft-ui-reactor#1273 · Filter by author azchohfi opened on Sep 23, 2026

• Shipping Reactor.pri under lib/ triggers the Windows App SDK PRI-expansion step, which fails on long paths

  microsoft/microsoft-ui-reactor#1271 · Filter by author azchohfi opened on Sep 23, 2026
  1

• Packaged tier: two-layout coexistence is only verified by hand

  testing
  microsoft/microsoft-ui-reactor#1264 · Filter by author azchohfi opened on Sep 21, 2026

• RN harness projects depend on react-native-windows@1.0.0, a placeholder package with no code — npm run windows cannot build

  dependencies
  microsoft/microsoft-ui-reactor#1177 · Filter by author azchohfi opened on Sep 3, 2026

• Nothing gates the CI-repro build command against ci.yml — three docs now duplicate it

  cidocumentationtech-debt
  microsoft/microsoft-ui-reactor#1167 · Filter by author azchohfi opened on Sep 1, 2026

• tools/reviewer overstates coverage: 147 of 633 manifest paths are dead

  bugtech-debt
  microsoft/microsoft-ui-reactor#1134 · Filter by author azchohfi opened on Aug 26, 2026

• Reactor.Cli can't build offline: one command forces a build-time npm download

  tech-debt
  microsoft/microsoft-ui-reactor#1133 · Filter by author azchohfi opened on Aug 26, 2026

• [Feature] Realign minver -p experimental.0 to preview.0 before the first stable tag

  enhancementneeds-triage
  microsoft/microsoft-ui-reactor#1127 · Filter by author azchohfi opened on Aug 25, 2026

• [CI] Docs tier-drift's path filter watches the templates but not docs/guide, so a change to the generated output alone skips the only gate that checks it

  bug
  microsoft/microsoft-ui-reactor#1059 · Filter by author azchohfi opened on Aug 1, 2026
  2

• [Feature] Resolve gallery-lint shadowing with SemanticModel instead of a syntactic scope walk

  enhancementneeds-triage
  microsoft/microsoft-ui-reactor#1058 · Filter by author azchohfi opened on Aug 1, 2026

• [Test-gate] ReadCleanElementCommonBlock matches over comments — false-green in one consumer, false-red in the other

  bug
  microsoft/microsoft-ui-reactor#1054 · Filter by author azchohfi opened on Aug 1, 2026
  1

• [Bug] One malformed XML doc comment silently disables *all* XML-doc diagnostics repo-wide (CS1574/CS1591 never computed)

  bugneeds-triage
  microsoft/microsoft-ui-reactor#1053 · Filter by author azchohfi opened on Aug 1, 2026
  2

• [Bug] Attached-property exclusion list accepts instance DPs: the diagnostic recommends it, and no test reads the reason

  bugneeds-triage
  microsoft/microsoft-ui-reactor#1048 · Filter by author azchohfi opened on Aug 1, 2026
  1

• [Bug] AOT Selftests intermittently exits 1 with no failing test and no TAP trailer — a host crash distinct from #988, and misattributed to it

  microsoft/microsoft-ui-reactor#1046 · Filter by author azchohfi opened on Aug 1, 2026

• [Bug] WinAppUi.SendKeys is fail-open: an unmapped key token exits 0 and types nothing, so every E2E inherits an instrument that cannot report failure

  bug
  microsoft/microsoft-ui-reactor#1042 · Filter by author azchohfi opened on Aug 1, 2026

• Selftest: HostCtrlFactory_Mounted/_PropsApplied flake under the coverage collector — the one fixed-delay gate 5a6bddb2 left unconverted

  bug
  microsoft/microsoft-ui-reactor#1041 · Filter by author azchohfi opened on Aug 1, 2026
  1

• [Flaky] CompilationLoaderTests.Cold_load_under_500ms_warm_under_50ms_for_minimal_project — wall-clock budget assertion is coupled to machine load, not to the loader

  bug
  microsoft/microsoft-ui-reactor#1040 · Filter by author azchohfi opened on Aug 1, 2026
  1

• [Bug] Pooled Grid never releases BorderThickness/BorderBrush — ElementPool.CleanElement has no border-box clear for concrete panels

  microsoft/microsoft-ui-reactor#1039 · Filter by author azchohfi opened on Aug 1, 2026

• tests/Reactor.Compile.Analyzer.Tests runs in no CI workflow — 11 tests that cannot fail

  testing
  microsoft/microsoft-ui-reactor#1038 · Filter by author azchohfi opened on Aug 1, 2026
  3

• Flaky: ExitTr_Removed + 3 sibling exit-transition fixtures fail intermittently in the AOT Selftests leg (reproduces on main)

  bug
  microsoft/microsoft-ui-reactor#1037 · Filter by author azchohfi opened on Aug 1, 2026

• ApiIndexGeneratorTests.Index_IsUpToDate verifies one of the two committed API index copies, and its failure message recruits you into that narrower check

  testing
  microsoft/microsoft-ui-reactor#1035 · Filter by author azchohfi opened on Aug 1, 2026
  4

• mur docs: CLI-supplied --topic reaches Path.Combine as the later segment, so a rooted value silently relocates the base

  bug
  microsoft/microsoft-ui-reactor#1034 · Filter by author azchohfi opened on Aug 1, 2026