Wouldn't this be noticeable in the form of a new tab opening? For example TripAdvisor does pop unders which are unnoticeable until you realize that there is a w

Wouldn't this be noticeable in the form of a new tab opening? For example TripAdvisor does pop unders which are unnoticeable until you realize that there is a window (Not a tab even though my settings say to open links in New tabs, never windows) underneath your current window