Seems to work fine BUT ONLY IN ONE WINDOW ... I uses several windows and there are "no duplicates" found by this (and other) tab deduplication extension ...
Because of some somehow gone/lossed tabs I opened a saved session so I had to get rid of duplicated tabs.
By default, the extension only searches for duplicates within the currently focused window. To detect duplicates across all open windows, change the "Scope" setting to "All windows" in the Options page.
