version: 2.80 (sub 74), branch: blender2.7, commit date: 2019-06-09 21:43, hash: 030c7df19da9, type: Release
build date: 2019-06-09, 23:33:07
platform: Linux
How to reproduce:
- Create a Grease Pencil object with a vertex group
- Enter Weight Paint mode
- Using the weight brush, try to paint some weight onto the stroke.
I'm unable to make the weight brush have any effect whatsoever. Weight can still be assigned in Edit Mode, but weight painting seems to be completely unresponsive now.