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3-arg hypot flattens Duals with different tags, and rejects non-Type tags

Status: Open.

#834 In JuliaDiff/ForwardDiff.jl;

· devmotion opened on Aug 5, 2026

checktag's permissive fallback silently disables tag checking (e.g. for derivative(f!, y, x, cfg))

Status: Open.

#833 In JuliaDiff/ForwardDiff.jl;

· devmotion opened on Aug 5, 2026

jacobian(f!, y, x) doesn't work if y is complex

Status: Open.

#832 In JuliaDiff/ForwardDiff.jl;

· devmotion opened on Aug 5, 2026

jacobian(f, x) silently returns zeros if f is complex-valued

Status: Open.

#830 In JuliaDiff/ForwardDiff.jl;

· devmotion opened on Aug 5, 2026

derivative(f!, y, x) doesn't work if y is complex, even if x is real

Status: Open.

#818 In JuliaDiff/ForwardDiff.jl;

· wsshin opened on Jun 25, 2026

tagging API?

Status: Open.

#813 In JuliaDiff/ForwardDiff.jl;

· longemen3000 opened on Jun 8, 2026

Deferred computation for precompilable tags?

Status: Open.

#812 In JuliaDiff/ForwardDiff.jl;

· longemen3000 opened on Jun 7, 2026

SpecialFunctions.jl could be a weak dep?

Status: Open.

#800 In JuliaDiff/ForwardDiff.jl;

· juliohm opened on Apr 5, 2026

Wrong broadcasting in case of complex numbers

Status: Open.

#795 In JuliaDiff/ForwardDiff.jl;

· rcalxrc08 opened on Feb 17, 2026

norm() on a zero vector with non-zero partials gives nan value for v1.3.1+

Status: Open.

#794 In JuliaDiff/ForwardDiff.jl;

· marklau34 opened on Feb 12, 2026

NaN partials and comparison

Status: Open.

#790 In JuliaDiff/ForwardDiff.jl;

· aplavin opened on Dec 24, 2025

Error with ForwardDiff 1 and QuadGK

Status: Open.

#785 In JuliaDiff/ForwardDiff.jl;

· sschlenkrich opened on Nov 17, 2025