Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Why is my iMac menu bar disappearing?

  • 2 replies
  • 1 has this problem
  • 1 view
  • Last reply by boydmbd

boydmbd
boydmbd
more options

My iMac menu bar disappears after clicking on Firefox browser. Can anyone help me with this?

One of the screenshots reflects the browser without the menu bar and a light blue strip in its place. Also, I am able to raise the browser over the blue strip. When the menu bar is active, the browser butts up against the bottom of the menu bar.

Safari nor Google Chrome have this issue, only Firefox.

Please help.

My iMac menu bar disappears after clicking on Firefox browser. Can anyone help me with this? One of the screenshots reflects the browser without the menu bar and a light blue strip in its place. Also, I am able to raise the browser over the blue strip. When the menu bar is active, the browser butts up against the bottom of the menu bar. Safari nor Google Chrome have this issue, only Firefox. Please help.

Chosen solution

Thanks, Cor-el,

I disabled "Grammarly for Firefox" and the issue was resolved; I installed Grammarly in the past few days.

Fortunately, I didn't have restart in SafeMode.

Thanks again!

Read this answer in context 👍 0

All Replies (2)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Make sure you do not run Firefox in Full Screen mode (Mac: Command+Shift+F).

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • Do NOT click the "Refresh Firefox" button on the Safe Mode start window

You can use one of these to set which toolbars to show.

  • "3-bar" menu button -> Customize -> Show/Hide Toolbars
  • View -> Toolbars
    You can tap the Alt key or press F10 to show the Menu Bar
  • Right-click empty toolbar area
boydmbd
boydmbd Question owner
more options

Chosen Solution

Thanks, Cor-el,

I disabled "Grammarly for Firefox" and the issue was resolved; I installed Grammarly in the past few days.

Fortunately, I didn't have restart in SafeMode.

Thanks again!

Modified by boydmbd