User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:75.0) Gecko/20100101 Firefox/75.0
Steps to reproduce:
Clicked into address bar or open a new tab.
Address bar expands and partly covers the Bookmarks Toolbar. This is very unprofessional looking and makes viewing the Bookmarks Toolbar more difficult.
The address bar should remain the same size, there is zero advantage of making it slightly larger. The auto expand function adds code bloat and makes the UI look unprofessional. I suggest this function be completely removed from Firefox.
I know I can use about:config and set the browser.urlbar.update1 to false, but this bug report has been created so that this function can be eliminated from Firefox.