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Kernel crashes when plotting universes with multigroup materials

Bugs

Status: Open.

#3747 In openmc-dev/openmc;

· zoeprieto opened on Jan 22, 2026

Hitting lxml max attribute size for very large model

Bugs

Status: Open.

#3744 In openmc-dev/openmc;

· lewisgross1296 opened on Jan 21, 2026

openmc.Settings Allows Arbitrary Attribute Assignment, Leading to Silent User Errors

Status: Open.

#3741 In openmc-dev/openmc;

· Submerging opened on Jan 18, 2026

Consider removing VTK as a Python dependency.

Status: Open.

#3729 In openmc-dev/openmc;

· MicahGale opened on Jan 14, 2026

Explicit Void Regions in Kinetic Random Ray

help wanted

MGXS

Random Ray

Status: Open.

Feature

#3723 In openmc-dev/openmc;

· yardasol opened on Jan 12, 2026

openmc.stats.Tabular documents support for 'log-log' interpolation, but C++ backend rejects it as unsupported

Bugs

Status: Open.

#3722 In openmc-dev/openmc;

· Submerging opened on Jan 11, 2026

CADIS

Status: Open.

#3711 In openmc-dev/openmc;

· j-fletcher opened on Jan 6, 2026

Local Adjoint Source for Random Ray

Status: Open.

#3710 In openmc-dev/openmc;

· j-fletcher opened on Jan 6, 2026

NETCDF causing error in Docker build with DAGMC and libmesh enabled

Bugs

Status: Open.

#3695 In openmc-dev/openmc;

· aditya-gts opened on Dec 22, 2025

Allow passing filters to IFP tallies to compute coupled coefficients

Status: Open.

#3684 In openmc-dev/openmc;

· meltawila opened on Dec 14, 2025

feature request model.voxel_plot

Status: Open.

#3677 In openmc-dev/openmc;

· shimwell opened on Dec 11, 2025

Python API not reading nuclear data <code>interpolation</code> and <code>breakpoint</code> correctly

Bugs

Status: Open.

#3672 In openmc-dev/openmc;

· shimwell opened on Dec 6, 2025