UserAgent: Mozilla/5.0 (X11; CrOS x86_64 11578.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3669.0 Safari/537.36
Platform: 11578.0.0 (Official Build) dev-channel eve

Steps to reproduce the problem:
Open launcher, press volume keys, or just look at the shelf with no windows open.

What is the expected behavior?

What went wrong?
Pay attention to the wallpaper blur in these screenshots:
https://photos.app.goo.gl/BZujbLf6o5kFVMt99

Did this work before? Yes 72.0.3626.0, i believe

Chrome version: 73.0.3669.0  Channel: dev
OS Version: 11578.0.0
Flash Version: