If you ever tryed to use the “open in tabs” command in firefox, you saw that all the new opened tab overwrite current tabs. So here the fix:
go to about:config and set the browser.tabs.loadFolderAndReplace to false (thanks to codefront.net
Links - 09/07/2006 @ 11:44

If you ever tryed to use the “open in tabs” command in firefox, you saw that all the new opened tab overwrite current tabs. So here the fix:
go to about:config and set the browser.tabs.loadFolderAndReplace to false (thanks to codefront.net