I submitted a Matlab support case but posting this publicly to hopefully save people some trouble and see if anyone has ideas. After upgrading my workstation from Ubuntu 25.10 to Ubuntu 26.04 LTS, MATLAB GUI consistently prints this terminal error on shutdown: free(): chunks in smallbin corrupted MATLAB appears to run normally, but closing the GUI takes a long time and sometimes produces crash dumps. The terminal error occurs every time I close the GUI but crash dumps are intermittent. I attached one R2026a crash dump. I had zero issues on Ubuntu 25.10. Affected versions: - MATLAB R2026a - MATLAB R2025b - I suspect all 'new desktop' versions System: - Ubuntu 26.04 LTS - AMD EPYC 7443P - NVIDIA RTX 3090 - Ubuntu default NVIDIA driver: nvidia-driver-595-open, 595.58.03 - NVIDIA module path: /lib/modules/7.0.0-14-generic/kernel/nvidia-595-open/nvidia.ko - glibc 2.43 Important note: the error first occurred with a clean MathWorks MATLAB installation before installing the Ubuntu/Debian `matlab-support`…