System Information
OS: Ubunutu 18.04
GPU: gtx

Blender Version

blender 2.80, 4d795cee4938 2018-12-31

Short description of error
Crash when change material after import glTF

Exact steps for others to reproduce the error

blend file :

• change the material of the object to "DefaultMat"
• It crashes

note: defaultMat is from a gltf