Chrome Version       : 68.0.3437.0
OS Version: 10704.0.0

What steps will reproduce the problem?
1. Activate A11Y "On-screen keyboard" feature
2. Click on text field anywhere on the screen to kbd to pop up
3. Try to click on hide screen button (looks like a kbd with arrow underneath)

What is the expected result?

Virtual keyboard should disappear.

What happens instead of that?

VK can't be removed from the screen with this button.

Please provide any additional information below. Attach a screenshot if
possible.

UserAgentString: Mozilla/5.0 (X11; CrOS x86_64 10704.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3437.0 Safari/537.36