Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

Tab closed UNDO stays up

more options

When closing a tab a button shows up at the bottom of the page. The button contains "Tab closed UNDO"

It won't go away. It is on the bottom of this page right now. If I switch tabs it stays on every page. Generally have to switch to another app on Android and come back to make it go away.

When closing a tab a button shows up at the bottom of the page. The button contains "Tab closed UNDO" It won't go away. It is on the bottom of this page right now. If I switch tabs it stays on every page. Generally have to switch to another app on Android and come back to make it go away.

All Replies (2)

more options

Did you try to click UNDO?

more options

Do you mean in Firefox Preview, the new browser under development?

Unfortunately, this has been going on for a while, that the "toast" doesn't fade out after a short time like it should. You may need to wait a few extra seconds and tap UNDO to dismiss the toast.

Related (unsolved) thread: https://support.mozilla.org/questions/1279180