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tabs / tools / bookmarks bars oversized in FFX-89

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Hello. Since the last update (89.0), there is an annoying behaviour. The menu bar has kept a normal height, but the tab bar and tools bar are oversized (both are almost twice the normal size). The bookmarks items also are overgrown. Does anyone experience the same? Thanks in advance. hhall.

Hello. Since the last update (89.0), there is an annoying behaviour. The menu bar has kept a normal height, but the tab bar and tools bar are oversized (both are almost twice the normal size). The bookmarks items also are overgrown. Does anyone experience the same? Thanks in advance. hhall.

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Hi hhall, "taller" toolbar spacing is part of the new design.

You could consider using the Compact mode, which is no longer fully supported by still available. More info in this article: Compact mode workaround in Firefox.


This wider menu item spacing is more of a challenge. I can give you a quick short-term workaround, but a more durable solution will require more work.

Temporary Fix

For testing purposes, the developers left a preference in Firefox 89 to switch between new style and old style menus:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button accepting the risk.

(2) In the search box in the page, type or paste browser.proton.contextmenus.enabled and pause while the list is filtered

(3) Double-click the preference to switch between true (new style) and false (old style)

Some menus may be cut off or sized incorrectly after this change until the next time you do a normal exit/restart of Firefox.

Longer Term Community Workaround

This involves setting up a userChrome.css file. The full instructions are in the following thread: https://support.mozilla.org/questions/1337841