Firefox is just a browser so not sure how this is a Firefox issue? Sounds more like Addons are the cause of the problem. You need to turn off/on each of them to find the problem app and remove or disable and then contact the addon developer of the issue with the Addon.

If you have AdBlocker Ultimate installed, try disabling that one first.

It started today never had this issue until I update to see screen shot please.

Do you have Adblocker Ultimate installed in Firefox?

See this.

https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#w_the-problem-does-not-happen-in-troubleshoot-mode

I tired all of your fixes nothing fixed it found out it was my yahoo account cause i use yahoo as my default address from my home page. So many thanks to all at least I am back to normal now.

Thank you all for your help

Frank

Thank you for letting us know.

Your welcome just wanted top let oyu all know this.

Thank you all

Frank

Thank you. Hopefully we will have some news soon.

Hi

I understand that we may have a fix for this problem.

1. Open AdBlocker Ultimate from the toolbar icon and select Settings.
2. Next, select the Filters tab in the page that opens and turn off the Security option.
3. Close the page and then repeat the process, but turning the Security option on.

Does this help fix the issue?