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

Google calendar header (Today, arrows, Month, search, settings, etc) not displaying in Firefox

  • 6 replies
  • 1 has this problem
  • 1 view
  • Last reply by abirch1

more options

Worked fine last night when I shut down. Now this morning my google calendar header is gone and I can't figure out how to get it back. It's there using Brave browser for another (different) gmail account so I'm thinking it's a Firefox display issue. Any ideas on how to fix? Using the far upper left arrow keys to change month does not change the main display calendar either so this problem makes google calendar essentially useless using Firefox. Thanks for any and all help!

Worked fine last night when I shut down. Now this morning my google calendar header is gone and I can't figure out how to get it back. It's there using Brave browser for another (different) gmail account so I'm thinking it's a Firefox display issue. Any ideas on how to fix? Using the far upper left arrow keys to change month does not change the main display calendar either so this problem makes google calendar essentially useless using Firefox. Thanks for any and all help!

Chosen solution

I notice a notch on the Control Center 'i' icon. This indicates that you made changes to permissions from the default. You can click this icon to see what changes this is about.

You can possibly clear the Site Preferences to remove this data, but this resets the permissions for all websites.

Read this answer in context 👍 1

All Replies (6)

more options

See attached Firefox and Brave images of Google Calendar for example of what is missing in Firefox (note these are two different Google accounts).

more options

Do a remove and then close the browser and reopen the browser and reinstall the Addon again? And did you make sure your not using a older version of the addon.

Modified by WestEnd

more options

Hmm, Google does conduct UI experiments on its users, but if this is one of those, it's not very useful!

If a site is generally known to work in Firefox, these are standard suggestions to try when it stops working normally:

Double-check content blockers: Firefox's Content Blocking feature and extensions that counter ads and tracking may break websites that embed third party content (meaning, from a secondary server).

(A) Do you see a shield icon toward the left end of the address bar, near the lock icon? More info on managing the Tracking Protection feature in this article: Content Blocking.

(B) Extensions such as Adblock Plus, Blur, Disconnect, Ghostery, NoScript, Privacy Badger, uBlock Origin or uMatrix should provide toolbar buttons to manage blocked content in a page. There may or may not be a number on the icon indicating the number of blocked items; you may need to click the button to see what's going on and test whether you need to make an exception for this site.

Cache and Cookies: When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site.

(1) Clear Firefox's Cache

See: How to clear the Firefox cache

If you have a large hard drive, this might take a few minutes.

(2) Remove the site's cookies (save any pending work first). While viewing a page on the site, try either:

  • right-click (on Mac Ctrl+click) a blank area of the page and choose View Page Info > Security > "Clear Cookies and Site Data"
  • (menu bar) Tools > Page Info > Security > "Clear Cookies and Site Data"
  • click the padlock or "i" icon in the address bar, then the ">" button, then More Information, and finally the "Clear Cookies and Site Data" button

In the dialog that opens, you will see one or more matches to the current address so you can remove the site's cookies individually without affecting other sites.

Then try reloading the page. Does that help?

Testing in Firefox's Safe Mode: In its Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is not running: Hold down the Shift key when starting Firefox. (On Mac, hold down the option/alt key instead of the Shift key.)

If Firefox is running: You can restart Firefox in Safe Mode using either:

  • "3-bar" menu button > "?" Help > Restart with Add-ons Disabled
  • (menu bar) Help menu > Restart with Add-ons Disabled

and OK the restart.

Both scenarios: A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement?

more options

WestEnd said

Did remove and then close the browser and reopen the browser and reinstall the Addon again? And did you make sure your not using a older version of the addon.

I think the issue is with the built-in website features at

https://calendar.google.com/calendar/r

They are loaded by a script a split second after the main controls, so there may be a content blocking, cache, or cookie issue.

more options

Chosen Solution

I notice a notch on the Control Center 'i' icon. This indicates that you made changes to permissions from the default. You can click this icon to see what changes this is about.

You can possibly clear the Site Preferences to remove this data, but this resets the permissions for all websites.

more options

Hello everyone and thanks for all replies and help. As I've been really busy since posting I've not had time to act on any of the generous and thoughtful suggestions - THANK YOU ALL for your contributions.

However, yesterday, the problem resolved it self - just as mysteriously as it presented. I have no idea why...Crazy!

But thank you all again for your time and suggestions!