Issues

• BUG: Metropolis/DEMetropolis/DEMetropolisZ ignore the mode argument when compiling logp

  pymc-devs/pymc#8598 · Filter by author parth-patel010 opened on Nov 5, 2026
  2

• BUG: Matrix CustomDist fails model logp compilation on use_jacobian keyword

  pymc-devs/pymc#8595 · Filter by author antonsoo opened on Nov 4, 2026
  1

• DOC: expand_dims example for sample_posterior_predictive does not work

  docs
  pymc-devs/pymc#8594 · Filter by author fxthomas opened on Nov 4, 2026
  2

• pm.Truncated of InverseGamma warns about RVs in the derived graph

  buglogprob
  pymc-devs/pymc#8579 · Filter by author jessegrabowski opened on Oct 28, 2026

• BUG: transformed value names are parsed incorrectly when the transform name contains an underscore (LKJCorr)

  pymc-devs/pymc#8574 · Filter by author JoeyTan21 opened on Oct 26, 2026

• MvGaussianRandomWalk with dims breaks model_to_graphviz: offset applied to vector dim

  bugdimsshape problem
  pymc-devs/pymc#8572 · Filter by author jessegrabowski opened on Oct 25, 2026
  1

• BUG: BetaBinomial and HyperGeometric logcdf reduce a parameter batch to one wrong scalar

  bug
  pymc-devs/pymc#8566 · Filter by author drbenvincent opened on Oct 24, 2026
  3

• BUG: batched MvNormal precision logp is not the documented density

  bug
  pymc-devs/pymc#8557 · Filter by author drbenvincent opened on Oct 24, 2026
  2

• BUG: CholeskyCorr(upper=True) returns a lower-triangular factor

  bug
  pymc-devs/pymc#8555 · Filter by author drbenvincent opened on Oct 24, 2026
  2

• BUG: measurable matmul logp drops the Jacobian once instead of once per column

  bug
  pymc-devs/pymc#8543 · Filter by author drbenvincent opened on Oct 24, 2026
  1

• BUG: Slice started outside the support returns out-of-support draws

  bug
  pymc-devs/pymc#8541 · Filter by author drbenvincent opened on Oct 24, 2026
  1

• BUG: Metropolis with PoissonProposal omits the Hastings correction

  bug
  pymc-devs/pymc#8540 · Filter by author drbenvincent opened on Oct 24, 2026
  1

• BUG: MarginalKron pred_noise adds sigma, not sigma squared

  bug
  pymc-devs/pymc#8535 · Filter by author drbenvincent opened on Oct 24, 2026
  1

• BUG: measurable matmul logp triples the density of B @ (x + b)

  bug
  pymc-devs/pymc#8530 · Filter by author drbenvincent opened on Oct 24, 2026
  1

• BUG: CategoricalGibbsMetropolis(proposal="proportional") samples the wrong distribution

  pymc-devs/pymc#8516 · Filter by author mottopanikeiku opened on Oct 22, 2026
  1

• BUG: CAR forward draws have covariance inv(Q)^2 instead of inv(Q)

  pymc-devs/pymc#8513 · Filter by author mottopanikeiku opened on Oct 20, 2026

• Potential depending on XTensor arithmetic fails gradient compilation without explicit lowering

  pymc-devs/pymc#8506 · Filter by author drbenvincent opened on Oct 19, 2026
  1

• Default support point for CustomDist with dist

  pymc-devs/pymc#8491 · Filter by author ricardoV94 opened on Oct 15, 2026
  1

• test_sampling_consistency (ZarrTrace) fails on ubuntu/numba/Python 3.14 CI

  Github CI/CDtests
  pymc-devs/pymc#8461 · Filter by author juanitorduz opened on Oct 1, 2026
  1

• BUG: icdf loses precision in the far tails for Cauchy, Exponential and Weibull

  bug
  pymc-devs/pymc#8445 · Filter by author siddhant-shahhh opened on Sep 20, 2026
  1

• BUG: ADVI default optimizer adagrad_window biases posterior SDs upward (~8.5% on a conjugate Gaussian): the current gradient is inside its own normaliser

  bug
  pymc-devs/pymc#8444 · Filter by author Hashirama1337s opened on Sep 19, 2026
  1

• LogitNormal gets no default transform, unlike other unit-interval distributions

  pymc-devs/pymc#8441 · Filter by author AllenDowney opened on Sep 15, 2026
  4

• BUG: Cauchy and StudentT logcdf return -inf in the lower tail where the true value is finite

  bug
  pymc-devs/pymc#8435 · Filter by author siddhant-shahhh opened on Sep 14, 2026

• ENH: Enable batch size > 1 for CAR distribution

  feature request
  pymc-devs/pymc#8414 · Filter by author ckrapu opened on Aug 28, 2026
  3

• ENH: Render full symbolic expressions for Deterministics (and Potentials) in model representations — plain text and LaTeX

  pymc-devs/pymc#8407 · Filter by author drbenvincent opened on Aug 25, 2026
  1