Issues

• Array.zip3 documentation describes the result as an array of pairs

  Needs-Triage
  dotnet/fsharp#20811 · Filter by author xperiandri opened on Oct 19, 2026 · Backlog

• Audit RequireCompilationThread and related not enforced phantom token/lock invariants wrt parallel compilation

  dotnet/fsharp#20804 · Filter by author majocha opened on Oct 18, 2026 · Backlog
  1

• Partial application over a byref-like argument compiles and fails at run time with TypeLoadException

  BugNeeds-Triage
  Bug

  dotnet/fsharp#20803 · Filter by author xperiandri opened on Oct 17, 2026 · Backlog

• Compile with DOTNET_TieredPGO=0 DOTNET_TC_CallCountingDelayMs=0 for faster compilation

  Feature RequestNeeds-Triage
  Feature

  dotnet/fsharp#20802 · Filter by author safesparrow opened on Oct 17, 2026 · Backlog
  3

• FSharpValue.PreComputeTuplePropertyInfo reports an out-of-range index for every struct tuple

  BugNeeds-Triage
  Bug

  dotnet/fsharp#20801 · Filter by author xperiandri opened on Oct 17, 2026 · Backlog

• Printed quotations show a struct tuple as NewTuple

  BugNeeds-Triage
  Bug

  dotnet/fsharp#20800 · Filter by author xperiandri opened on Oct 17, 2026 · Backlog

• Agentic workflows are pinned to gh-aw v0.76.1; aw-auto-update looks dormant

  Needs-Triage
  dotnet/fsharp#20798 · Filter by author mab2500 opened on Oct 17, 2026 · Backlog

• Visual Studio F# Rename corrupts record update expressions

  Area-LangService-RenameSymbolBug
  Bug

  dotnet/fsharp#20791 · Filter by author toubou-k opened on Oct 16, 2026 · Backlog
  

• Stack overflow when a quotation contains a list literal of about a thousand elements

  Area-Quotations
  Bug

  dotnet/fsharp#20788 · Filter by author xperiandri opened on Oct 15, 2026 · Backlog
  

• [aw] Agentic State Machine — Diagram Generator failed

  agentic-workflows
  dotnet/fsharp#20784 · Filter by author github-actions opened on Oct 15, 2026

• Documentation: Array.tryPick code example gives an error

  Area-XmlDocs
  dotnet/fsharp#20780 · Filter by author mrboring opened on Oct 14, 2026 · Backlog
  

• 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

• 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

• .NET SDK >= 10.0.200

  Area-DiagnosticsBug
  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