I just tested it and I'm unable to reproduce the bug. I tried different brushes, settings etc., but nothing crashes blender in relation to this issue.
Jan 27 2019
Dec 20 2018
Dec 5 2018
I'm really sorry to say that after downloading the blender-2.80-baf599610a4-win64 commit and testing,
it crashes again! Just like before. Just a simple cube with bevel modifier, and using the grab brush in
Dec 3 2018
I downloaded the latest build of Blender 2.8 and it doesn't crash anymore when doing the exact thing I tried before.
Neither will switching brushes.