UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36

Steps to reproduce the problem:
1. Install this Google Dictionary (https://chrome.google.com/webstore/detail/google-dictionary-by-goog/mgijmajocgfcbeboacabfgobmjgjcoja)
2. Right click the icon
3. It opens a mini screen to type a word instead of the context menu with the option "Hide in Chrome menu"

What is the expected behavior?
I expect to be able to hide any chrome extension from the toolbar menu by right clicking the extension.
If this is not an option, I expect to be able to hide extensions by going to chrome://extensions.

What went wrong?
I am unable to hide certain extensions.

Did this work before? Yes I don't know - my browser was set to auto-update, so I'm guessing it's a very recent update.

Chrome version: 64.0.3282.140  Channel: stable
OS Version: OS X 10.12.6
Flash Version: 

This is a deal-breaker. For the extension I added as a reference - it could use the left mouse click to bring up the special screen, and maintain the default behavior of the right click. This is enough to make me uninstall some extensions completely as I do not want them cluttering my screen when their primary function is to run in the background.