System Information
Operating system: Win7 64Bit Pro
Graphics card: Nvidea Geforce

Blender Version
2.80, b4dfae3df7b9, may 20 - 2019)

Short description: Open Blender with Eevee Render Engine. Click Material Button and Blender Crashs.

Exact steps: Open Blender with Eevee Render Engine. No further steps are required. Just Click Material-Button and Blender Crashs. No more, no less.

Thanks for Blender Dudes!

Personal note: At the moment you get the impression that the team is more concerned with moving menus and buttons than with... (see Outliner Mark button, Visibility, Move Prefencies in the Menus etc.)