hello morgan834, try this add-on: * https://addons.mozilla.org/en-US/firefox/addon/open-tabs-next-to-current/

Hmm, strange that they behave differently! Firefox's native (uncustomized) behavior is: * Open ''related'' tabs next to current (e.g., from a link in the current tab) * Open new/unrelated tabs at the end of the bar There are now preferences to manage both of those (in Firefox 61 and later): (1) In a new tab, type or paste '''about:config''' in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk. (2) In the search box above the list, type or paste '''curr''' and pause while the list is filtered (3) Then set: ''Open Related Tabs Next to Current, Others at the End of the Bar: '' '''browser.tabs.insertAfterCurrent''' = false (default) '''browser.tabs.insertRelatedAfterCurrent''' = true (default) ''Open All Tabs Next to Current'' '''browser.tabs.insertAfterCurrent''' => '''true''' '''browser.tabs.insertRelatedAfterCurrent''' = ''whatever'' ''Open All Tabs at the End of the Bar'' '''browser.tabs.insertAfterCurrent''' = false (default) '''browser.tabs.insertRelatedAfterCurrent''' => '''false''' To switch a boolean-type preference between true and false, double-click it. Can you get them set the way you like?