System Information
Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.64

Blender Version
Broken: version: 2.80 (sub 71), branch: master, commit date: 2019-05-20 16:16, hash: rB9efe117535c6

Short description of error
Crash on switching color palette with subdivision surface on

Exact steps for others to reproduce the error

1. Make a cube add a material with image texture
2. add a color palette with about 10 colors in texture paint in image editor.
3. add subdivision surface to cube.
4. draw and switch colors in texture paint in image editor.
5. crash on random while switching colors from palette in texture paint in image editor

Note:

1. my 3d view and image editor is side by side.
2. my 3d view was in edit mode. (by pressing tab in image editor)