Issues

• Follow-ups from review of #1634: Enzyme ensemble SDE regression failing in DownstreamAD

  SciML/SciMLBase.jl#1660 · Filter by author ChrisRackauckas-Claude opened on Nov 3, 2026

• ImmutableNonlinearProblem keyword storage is not isbits on Julia 1.10

  bug
  SciML/SciMLBase.jl#1659 · Filter by author ChrisRackauckas opened on Nov 1, 2026

• solve(SteadyStateProblem, DynamicSS) via stored SCC lowering returns lowering-ordered state — full-state indexing throws (Run Tests red since ~2026-09-19)

  SciML/SciMLBase.jl#1658 · Filter by author ChrisRackauckas-Claude opened on Oct 30, 2026

• EnsembleSummary ci_type = :SEM ribbon is sqrt(N) too wide for scalar states

  SciML/SciMLBase.jl#1654 · Filter by author isaacsas opened on Oct 29, 2026

• SciMLBase 3.57.0 makes SCCNonlinearSolve solution buffers non-concrete before companion fix is released

  SciML/SciMLBase.jl#1646 · Filter by author ChrisRackauckas-Claude opened on Oct 18, 2026

• SavedSubsystem with an integer save_idxs maps the index the wrong way round

  SciML/SciMLBase.jl#1643 · Filter by author singhharsh1708 opened on Oct 16, 2026

• Delayed observed variables error through integrator interpolation (symbolic_interpolation passes no history function)

  SciML/SciMLBase.jl#1631 · Filter by author ChrisRackauckas-Claude opened on Sep 30, 2026

• The two-function types cannot be rebuilt with @set, and DynamicalDDEFunction cannot be constructed

  SciML/SciMLBase.jl#1625 · Filter by author singhharsh1708 opened on Sep 28, 2026

• Tracking: tolerance and termination contract rollout (#1562)

  SciML/SciMLBase.jl#1607 · Filter by author ChrisRackauckas-Claude opened on Sep 23, 2026

• Makie recipes are not Observable-aware

  bug
  SciML/SciMLBase.jl#1588 · Filter by author BambOoxX opened on Sep 7, 2026
  1

• Define automatic saving for time-series parameters assigned through integrator.ps

  SciML/SciMLBase.jl#1577 · Filter by author ChrisRackauckas-Claude opened on Sep 1, 2026
  1

• RFC: a single tolerance and termination contract across SciML

  SciML/SciMLBase.jl#1562 · Filter by author ChrisRackauckas-Claude opened on Aug 29, 2026
  3

• Symbolic observed variables in DDE solutions fail at interpolated times

  bug
  SciML/SciMLBase.jl#1527 · Filter by author Fololo opened on Aug 14, 2026
  1

• Repair current-master downstream test resolver after SciMLBase 3.47.0 version bump

  SciML/SciMLBase.jl#1522 · Filter by author ChrisRackauckas-Claude opened on Aug 14, 2026
  1

• Master ReleaseTest red: Catalyst Symbolic Stoichiometry UndefKeywordError (parent_sys)

  SciML/SciMLBase.jl#1465 · Filter by author ChrisRackauckas-Claude opened on Jul 23, 2026
  1

• Downgrade tests expose unsupported Enzyme inactive_kwarg dependency

  SciML/SciMLBase.jl#1457 · Filter by author ChrisRackauckas-Claude opened on Jul 22, 2026
  1

• Support saving discrete parameter changes for non-symbolic ODEProblems using SciMLStructures.Discrete

  SciML/SciMLBase.jl#1453 · Filter by author ivborissov opened on Jul 18, 2026
  1

  

• Rename HomotopyNonlinearFunction → PolynomialHomotopyProblem (or similar), per review suggestion in MTK#4576

  SciML/SciMLBase.jl#1383 · Filter by author BatchZero opened on Jun 12, 2026
  1

• Master CI red: observables_autodiff.jl AutoZygote failures (not Mooncake)

  SciML/SciMLBase.jl#1349 · Filter by author ChrisRackauckas-Claude opened on May 10, 2026

• 2.145.0 causes MaxIters in MTK optimization problem

  bug
  SciML/SciMLBase.jl#1263 · Filter by author cstjean opened on Mar 6, 2026
  18

• Zygote DAE adjoint test errors with ChainRules PConstructorApplicator issue

  SciML/SciMLBase.jl#1233 · Filter by author ChrisRackauckas-Claude opened on Feb 10, 2026
  1

  

• Downgrade CI fails: DifferentiationInterface incompatible with downgraded ADTypes

  SciML/SciMLBase.jl#1232 · Filter by author ChrisRackauckas-Claude opened on Feb 9, 2026

• Zygote autodiff fails on remake tests with DifferentiationInterface

  SciML/SciMLBase.jl#1208 · Filter by author ChrisRackauckas-Claude opened on Jan 15, 2026
  1

• Mooncake does not support SymbolicIndexingInterface AD

  SciML/SciMLBase.jl#1207 · Filter by author ChrisRackauckas-Claude opened on Jan 15, 2026
  3

  

• [CI Broken] ModelingToolkit integration tests failing due to InitializationProblem/TearingState error

  SciML/SciMLBase.jl#1192 · Filter by author ChrisRackauckas-Claude opened on Dec 29, 2025