Advanced history button to move back for link opened in new tab.
Link opened in new tab has not history. So you can not press button "Back". By this extension you can quickly move to source tab or if it closed to source link in current tab.
Enable button will be displayed by green color, disabled by gray color.
Just click on extension button to focus source tab. If source tab is closed then source link will be open in the current tab.
For show back link in popup window just move mouse pointer to extension button.