UserAgent: Mozilla/5.0 (X11; CrOS x86_64 11264.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3609.3 Safari/537.36
Platform: 11264.0.0 (Official Build) dev-channel peppy

Example URL:
doc.new

Steps to reproduce the problem:
1. Open new Google Doc with the latest dev build
2. Work normally on something
3. Keep working...

What is the expected behavior?
You should be able to work reliably.

What went wrong?
Content was shifting around, and content on the page was disappearing.

Does it occur on multiple sites: No

Is it a problem with a plugin? No 

Did this work before? Yes Whatever was before this release (everything on cros-updates-serving.appspot.com is green)

Does this work in other browsers? Yes

Chrome version: 72.0.3609.3  Channel: dev
OS Version: 11264.0.0
Flash Version: 31.0.0.148 

Unless you are determined to get your work done, it is impossible to work.