Thank you for the clear suggestion, and sorry it took so long to address it.

Version 4.1.0 now shows the number of duplicate tabs that will be closed in the context menu before you choose an action, for example as “URL (3)” or “Title (3)”. The count is calculated after the menu opens so the menu can still appear quickly.

I also adjusted the top-level scope behavior so duplicates inside the clicked group are not included when choosing the top-level cleanup scope.