Firefox: is there a way to remove the icon from the address bar?

For whatever reason I did not have this icon before but now have it in the address bar. Is there a way to remove it as I prefer simply accessing the extension from the menu when needed instead of always having this in my sight?

The issue names no file, test, or entry point. First investigate how the Firefox extension exposes its toolbar icon and whether it can remain available from the menu while being removed from the address bar. Done means the requested Firefox behavior is confirmed as supported or the scope and expected behavior are clearly defined.

Written by the indexing model from the issue text.