Issues

• Skip the FSharpType.IsUnion check when a quotation node for an instance member is built

  Feature Request
  Feature

  dotnet/fsharp#20765 · Filter by author xperiandri opened on Oct 11, 2026 · Backlog
  1

• Unpickle a quotation literal once, not on every evaluation

  Feature Request
  Feature

  dotnet/fsharp#20764 · Filter by author xperiandri opened on Oct 11, 2026 · Backlog
  2

• VS: hang when deleting a file

  BugNeeds-Triage
  Bug

  dotnet/fsharp#20760 · Filter by author majocha opened on Oct 11, 2026 · Backlog

• Question about changed behavior of string interpolations in NativeAOT in the .NET 11 rc1 SDK

  BugNeeds-Triage
  Bug

  dotnet/fsharp#20757 · Filter by author Numpsy opened on Oct 10, 2026 · Backlog

• Caches.Cache: its finalizer keeps a dropped check alive for one more full GC, and MailboxProcessor-mode caches are never collected

  dotnet/fsharp#20756 · Filter by author nojaf opened on Oct 10, 2026 · Backlog

• TransparentCompiler ignores keepAllBackgroundSymbolUses and enableBackgroundItemKeyStoreAndSemanticClassification, and caches every file's name resolution sink

  Area-Compiler-ServiceFeature ImprovementTheme-Performance
  dotnet/fsharp#20755 · Filter by author nojaf opened on Oct 10, 2026 · Backlog
  2

• Type mismatch reported for interpolated strings with multiple % specifiers in IDE checking

  Bug
  Bug

  dotnet/fsharp#20752 · Filter by author auduchinok opened on Oct 9, 2026 · Backlog
  

• TransparentCompiler: scripts read #load'ed files through the global FileSystem, and DocumentSource.Custom gives new versions on every call

  Needs-Triage
  dotnet/fsharp#20750 · Filter by author nojaf opened on Oct 9, 2026 · Backlog
  1

• Release-only wrong result in integer for loop: local bound inside loop range expression clobbers a local slot

  BugNeeds-Triage
  Bug

  dotnet/fsharp#20732 · Filter by author rspeele opened on Oct 8, 2026 · Backlog

• [aw] Agentic State Machine — Diagram Generator failed

  agentic-workflows
  dotnet/fsharp#20730 · Filter by author github-actions opened on Oct 8, 2026

• Wrong reported symbols for record spreads

  Area-Compiler-ServiceBug
  Bug

  dotnet/fsharp#20676 · Filter by author auduchinok opened on Oct 1, 2026 · Backlog
  3

• [Repo Assist] Monthly Activity 2026-10

  automationrepo-assist
  dotnet/fsharp#20672 · Filter by author github-actions opened on Oct 1, 2026

• [Automated] PRs inserted in VS build main-12230.144

  Needs-Triagevs-insertion
  dotnet/fsharp#20669 · Filter by author dotnet-bot opened on Oct 1, 2026 · Backlog

• Incorrect warning on Double.NaN pattern in match expression

  Area-Compiler-PatternMatchingBug
  Bug

  dotnet/fsharp#20667 · Filter by author djgorman-vz opened on Sep 30, 2026 · Backlog
  1

• .NET SDK >= 10.0.200

  BugNeeds-Triage
  Bug

  dotnet/fsharp#20666 · Filter by author kant2002 opened on Sep 30, 2026 · Backlog
  3

• [msbuild-quality] MSBuild defaults and incremental resource tracking regressions

  Area-ProjectsAndBuildautomation
  dotnet/fsharp#20664 · Filter by author github-actions opened on Sep 30, 2026

• Tags in a free-text XML doc comment are silently escaped; add a warning and XML doc refactorings

  Needs-Triage
  dotnet/fsharp#20661 · Filter by author xperiandri opened on Sep 29, 2026 · Backlog

• Transparent Compiler returns no completions after a dangling dot

  BugNeeds-Triage
  Bug

  dotnet/fsharp#20660 · Filter by author MangelMaxime opened on Sep 29, 2026 · Backlog

• [aw] Agentic State Machine — Diagram Generator failed

  agentic-workflows
  dotnet/fsharp#20656 · Filter by author github-actions opened on Sep 29, 2026
  1

• Test query translation against real LINQ providers

  Needs-Triage
  dotnet/fsharp#20649 · Filter by author xperiandri opened on Sep 27, 2026 · Backlog
  2

• Documentation comments issues

  BugNeeds-Triage
  Bug

  dotnet/fsharp#20646 · Filter by author Lanayx opened on Sep 27, 2026 · Backlog

• NavigableContainer: publishing the cases makes every comparison box the payload

  Needs-Triage
  dotnet/fsharp#20641 · Filter by author xperiandri opened on Sep 26, 2026 · Backlog

• Resolve <see cref> in XML doc comments like C#

  Feature RequestNeeds-Triage
  Feature

  dotnet/fsharp#20640 · Filter by author xperiandri opened on Sep 26, 2026 · Backlog

• LexFilter's hwTokenFetch is too large for the JIT to optimize and zeroes a large stack frame for every token

  Needs-Triage
  dotnet/fsharp#20632 · Filter by author nojaf opened on Sep 25, 2026 · Backlog
  5

• Renaming a parameter does not update <param>, <paramref>, <typeparam> and <typeparamref> in its XML doc

  Needs-Triage
  dotnet/fsharp#20630 · Filter by author xperiandri opened on Sep 24, 2026 · Backlog
  5