Why does an additional tab sometimes appear and later disappear in Firefox?
Why does an additional tab sometimes appear and later disappear in Firefox?
In this tab, a site opens and a preview is created. You can't create a preview in Mozilla Firefox any other way.
If you do not like way, you can create a preview manually - by selecting one from our image database.
If you are using previews from the actual sites, you can disable ‘auto-refresh’ of preview in ‘settings’.