We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

purple box appears in upper left corner of Firefox. It seems to contain a to do list of some sort all with an x through them as though they have been completed it disappears only to re-appear later.

more options

purple box appears in upper left corner of Firefox. It seems to contain a to do list of some sort all with an x through them as though they have been completed it disappears only to re-appear later.

purple box appears in upper left corner of Firefox. It seems to contain a to do list of some sort all with an x through them as though they have been completed it disappears only to re-appear later.

All Replies (1)

more options

Do you have that problem when running in the Firefox SafeMode?
http://support.mozilla.com/en-US/kb/Safe+Mode
Don't select anything right now, just use "Continue in SafeMode."

If not, see this:
http://support.mozilla.com/en-US/kb/troubleshooting+extensions+and+theme...