Hello maryhelene, you have many options, see cor-el chosen solution: https://support.mozilla.org/el/questions/762043#answer-114136

thank you

If you try to open the same URL in more than one tab then you may have the "Switch to tab" feature preventing that.

Hold down the Alt or Shift key while an entry in the drop down list is highlighted to disable "Switch to tab" and see the URL of all entries instead.

• Alt + Enter opens the highlighted URL in a new tab.
• Shift + Enter opens the highlighted URL in the current tab.
• Cursor Right copies the highlighted URL to the location bar in case you want to edit it.

Tabs used to offer 'duplicate tab' in their respective drop-down menu. This option seems to have disappeared.

The "Duplicate tab" was added by a Tab related Extension at the time.

James, is it possible to reinstall the Tab related Extension, as I used to find it most useful.

Thanks, David