Sparse Jacobian preparation with mixed mode AD and `GreedyColoringAlgorithm(; postprocessing=true)` fails

[SouthEndMusic]

MWE:

using DifferentiationInterface
using SparseConnectivityTracer
using SparseMatrixColorings
using ADTypes
import ForwardDiff
import Mooncake

sparsity_detector = TracerSparsityDetector()

function f!(y, x)
    y .= x
end

backend = AutoSparse(
    MixedMode(AutoForwardDiff(), AutoMooncake());
    sparsity_detector,
    coloring_algorithm=GreedyColoringAlgorithm(; postprocessing=true)
)

N = 50
x = zeros(N)
y = zeros(N)

jac_prep = prepare_jacobian(f!, y, backend, x)

Stack trace:

ERROR: ArgumentError: `stack` on an empty collection is not allowed
Stacktrace:
  [1] _empty_stack(::Function, ::Vararg{Any})
    @ Base .\abstractarray.jl:2994
  [2] _typed_stack(::Colon, ::Type{…}, ::Type{…}, A::Base.Generator{…}, Aax::Tuple{…})
    @ Base .\abstractarray.jl:2909
  [3] _typed_stack
    @ .\abstractarray.jl:2936 [inlined]
  [4] _typed_stack
    @ .\abstractarray.jl:2930 [inlined]
  [5] _stack
    @ .\abstractarray.jl:2898 [inlined]
  [6] _stack
    @ .\abstractarray.jl:2890 [inlined]
  [7] stack
    @ .\abstractarray.jl:2887 [inlined]
  [8] _prepare_mixed_sparse_jacobian_aux_aux(::Val{…}, ::DifferentiationInterface.BatchSizeSettings{…}, ::DifferentiationInterface.BatchSizeSettings{…}, ::SparseMatrixCSC{…}, ::SparseMatrixColorings.BicoloringResult{…}, ::Vector{…}, ::Tuple{…}, ::AutoSparse{…}, ::Vector{…})
    @ DifferentiationInterfaceSparseMatrixColoringsExt C:\ProgramData\DEVDrives\.julia\packages\DifferentiationInterface\TuoGH\ext\DifferentiationInterfaceSparseMatrixColoringsExt\jacobian_mixed.jl:117