Switching back to last tab on Firefox
Switching back to last tab on Firefox:
- browse
about:config - find
browser.ctrlTab.previews - set
true
Done! :)
You can switch back to the last tab via Ctrl + Tab.
I am not fully sure whether I've got the question right. Also on Windows you can use CTRL+Tab to cycle through tabs or CTRL+Shift+Tab to cycle reverse.
If you're looking for an option to select what happens when you close a tab I recommend to have a look at the Tab Mix Plus extension. In Events -> Tab closing you will find an option to define what happens when you close a tab. There you can select options like selecting the tab right or left to the closed one as well as going back to the previously active tab.
This is default behavior in Firefox 64.0, but the toggle for this control is now stored under the browser.ctrlTab.recentlyUsedOrder in about:config (enter about:config in your address bar to access this control and set it to "true").