Hi

Thank you for helping test Firefox in the pre-Release channels. What you are seeing is a feature that is still being worked on and is still being polished further to a possible wider release.

The people who answer questions here, for the most part, are other users volunteering their time (like me), not Mozilla employees or developers. If you want to leave feedback for developers, you can go to the Firefox Help menu and select either Share ideas and feedback… or Submit feedback…, depending on your Firefox version. Alternatively, you can use this link. Your feedback gets collected by a team of people who read it and gather data about the most common issues.

You can also file a bug report or feature request. See File a bug report or feature request for Mozilla products for details.

For now you can only remove this Extension button via the about:config page

• about:config => extensions.unifiedExtensions.enabled = false
• /questions/1392865 Remove Extension Icon from Tool Bar

Note that is isn't guaranteed that this pref will be available once this feature has been completed.

Do NOT remove this option from Firefox. If devs continue on this path, I'll go elsewhere. Will this dumbing down of the interface ever going to end?