New Firefox Update Menu Bookmark padding spacing fix?

Question

Recently (about an hour ago) my firefox auto updated to a new format, where all the text and bookmarks are forcibly spaced as if I were writing a double spaced essay. This has cut down the maximum number of displayed icons severely in book marks and there's what feels like a quarter inch of extra useless grey space in my top browser between the menu/file/edit/view/etc. section and the tabs.

Is there a way, such as through about:config to fix this vertical/height spacing issue of the UI?

I have been unsuccessful in locating a fix.

Solution

Try browser.proton.contextmenus.enabled > false (disables Proton UI of context menus)

from https://www.ghacks.net/2021/06/01/firefox-89-ships-with-interface-changes/