System Information
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2060 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 511.09

Blender Version
Broken: version: 3.1.0 Alpha, branch: master, commit date: 2022-01-15 05:40, hash: rBe69020ad0f52
Worked: (newest version of Blender that worked as expected)

Short description of error
Mesh Filter Both relax brushes crashes blender

Exact steps for others to reproduce the error
add a cube and use relax face or relax brush from mesh filter brushes
[Based on the default startup or an attached .blend file (as simple as possible)]