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

Random Pasting

  • 1 reply
  • 0 have this problem
  • 2 views
  • Last reply by zeroknight

more options

FF randomly keeps pasting my clipboard, and the last thing I highlighted. Only happens in FF search bar, and not in Google search bar. FF also randomly closes tabs with no explanation.

FF randomly keeps pasting my clipboard, and the last thing I highlighted. Only happens in FF search bar, and not in Google search bar. FF also randomly closes tabs with no explanation.

All Replies (1)

more options

The middle-mouse button is used for pasting the last selection on Linux and closing tabs. If you are using a touchpad, a three-finger tap may trigger the middle-mouse button action.

You can disable pasting this way by changing middlemouse.paste and browser.tabs.searchclipboardfor.middleclick to false in about:config.