This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Menu Bar is only showing halfway when FF is maximized! The top is cut off

more options

After updating FF to version 99.01, suddenly FF Messed up the Menu Bar. Now my Menu Bar at the very top is cut off. Can't see the top 50% of the buttons, when FF is maximised - as usually.

After updating FF to version 99.01, suddenly FF Messed up the Menu Bar. Now my Menu Bar at the very top is cut off. Can't see the top 50% of the buttons, when FF is maximised - as usually.
Attached screenshots

All Replies (6)

more options

Does this also happen if you manually maximize the Firefox window and then click the maximize button >

You can try to rename/remove xulstore.json in the Firefox profile folder with Firefox closed.

You can use the button on the "Help -> More Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page (Root directory).

more options

Many users who created a userChrome.css with "tabs below address bar" rules have this problem in Firefox 99. Obviously something has changed position by several pixels. Please return to the source of your rules and check for an updated version, or consider switching to a more updated source for those rules.

more options

You can try the code in this forum response for CSS code in userChrome.css for Firefox 89+ to move the tabs to below the Navigation Toolbar:

more options

The forum response isn't maintained so I would update from the source from which you got your code originally. Alternatively, look at the thread linked below (remove blank space in link). https://www.reddit. com/r/FirefoxCSS/comments/u202no/v_99_menu_fix_wanted/

more options

to cor-el see my exemple

  • showing FF according with the css I'm working now
  • according to the suggested css - the Menu bar is normal now

but the tabs on bottom are partly illegible, and there also is a double line visible now

more options

with below css the Menu bar is normal again, such as the tabs on bottom

  1. TabsToolbar {
position: absolute;
display: block;
bottom: 0;
width: 100vw;
background-clip: padding-box;
color: var(--toolbar-color);
} 
  1. tabbrowser-tabs {
width: 100vw;
} 
  1. navigator-toolbox {
position: relative;
padding-bottom: calc( var(--tab-min-height) + 8px );

}

  1. main-window[tabsintitlebar][sizemode="maximized"]:not([inDOMFullscreen="true"]) #titlebar {
height: 36px;
} 

.titlebar-buttonbox-container { position: fixed;

right: 0;
visibility: visible;
display: block;
}
#TabsToolbar .titlebar-buttonbox-container,
#TabsToolbar #window-controls {

display: none;

}