Tab Features

Enable undo close tabs
previously closed tabs may be reopened and the following conditions will be applied
- Max number of closed tabs to remember (specify a quantity) default: 25
- Restore the tab's original position - tabs are restored to their position when closed. (this preference does not apply to tab that was closed from other windows)
- Make the toolbar button display only a list
  
  If checked, when the Closed Tabs List button is clicked, a menu will open with recently closed tabs list. An arrow appears on the button next to the label indicating that a menu is present.
  When this option is not checked, the button will restore the last closed tab when clicked and an arrow will be displayed. A click on the arrow opens a menu with recently closed tabs list.
- Keep menu open
  
  Enabling 'Keep menu open' leave the menu open after deleting or opening closed tab, in order to allow you to do several commands in a row without having to open the menu every time. To close the menu, click with the mouse outside the menu.
- List closed tabs from all opened windows
  
  New preference since Firefox 117, when enabled Recently closed tabs list will include closed tabs from all opened windows.
- List closed tabs from recently closed windows
  
  New preference since Firefox 119, when enabled Recently closed tabs list will include closed tabs from recently closed windows.
Tips
Use middle mouse click on Closed Tabs List button to restore all closed tabs at once.
Use right mouse click on recently closed tabs list menu to open the context menu seen in the image below.

Ctrl-Tab

Ctrl-Tab navigates tabs in the most recent used order (pressing Ctrl-Tab will navigate between Tabs in the most recently used order)
- Show tab previews - displays a window with tab previews.
  
  This preference takes precedence over the next preference.
Ctrl-Tab displays a tab list popup menu - pressing Ctrl-Tab will display a popup menu list of all tabs.
- Tab list responds to the mouse - when checked you can use your mouse left click on the list to select a tab
  
  The List will sort tabs in most recently used order if you turn on Ctrl-Tab navigates tabs in the most recent used order.

Toggle tabs slideshow - click to go to Menu/Shortcut to enable/disable or change the shortcut
Disable Open/Close tab animation (removes default Firefox animation from tabs)

Auto Reload

Reload a tab regardless of its address - the tab will be reloaded even if its URL changes
Show Reload Every menu on Reload button - a Reload every menu will be added to the Reload toolbar button