There seems to be a issue with chromedriver 2.2 and the newest version of Chrome. This issue has to deal with the protractor not being able to send tab keys with 2.2. If I do webdriver-manager update, it does not update to the chromedriver 2.4. I did a hack where I downloaded chromedriver 2.4 exe myself and manually put it in the selenium folder, but that is not the best way to do this. How do you update protractor to use the latest version of Chromedriver 2.4?
I am having the same issue as you. It is related to a new release of chrome 54.
You need to wait for the next release of webdriver-manager (it was promised to be today), have look at https://github.com/angular/webdriver-manager/issues/102.
I guess in the mean time you can update your webdriver manually (the fix is already in the master branch, it was just not published yet with a version tag).
Hope I helped.