Chrome Version       : 67.0.3396.19
OS Version: 10575.17.0
URLs (if applicable) :
Other browsers tested:
  Add OK or FAIL after other browsers where you have tested this issue:
     Safari:
    Firefox:
    IE/Edge:

What steps will reproduce the problem?
1. Start Android App. (include text field)
2. Push ctrl+seatch+left key
3. 

What is the expected result?
Carret goes to left edge position.

What happens instead of that?
- lost brightness from ←、＿、□、×buttons on titile bar,
- lost focus from the app.

As same, ctrl+search+up/down/right key doesn't work.
These keys are behaved as Hom/End/PgUp/PgDn key a few months ago.
Somthings are broken.

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

UserAgentString: Mozilla/5.0 (X11; CrOS x86_64 10575.17.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.19 Safari/537.36