UserAgent: Mozilla/5.0 (X11; CrOS x86_64 11151.113.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.127 Safari/537.36
Platform: 11151.113.0 (Official Build) stable-channel cyan

Steps to reproduce the problem:
1. select accessibility on screen keyboard 
2. type type a character no visual confirmation if the key was pressed  
3. now press caps lock or a shift key and see the selection conformation. on the keyboard it's been gone for awhile  

What is the expected behavior?
every key press the on screen keyboard button should switch colour e.g light to dark

What went wrong?
missing the functionality 

Did this work before? Yes may be tenth version before this one

Chrome version: 71.0.3578.127  Channel: stable
OS Version: 11151.113.0
Flash Version: 32.0.0.101 /opt/google/chrome/pepper/libpepflashplayer.so

chrome os is getting better slowly but not able to check everything, that's what you're good at.