System Information
Widnwos 10 Pro
GeForce GTX 1080/PCIe/SSE2
NVIDIA Corporation
4.5.0 NVIDIA 411.70

Blender Version
Broken: (Blender2.8) hash: 60d4d583760
Worked: (optional)

Short description of error
Sculpting Multires Modifier will crash Bledner 2.8

Exact steps for others to reproduce the error
1.Go to sculpting
2.Add a Multires Modifier
3.Press subdivide 1 time
4.Select the Smooth bursh
5.Click on the mode, and Blender crashes.