When watching a movie or tv series Trakt is updated nicely.
However, when you pause the item you are watching, Trakt is not updated and keeps running.
So for example:
When watching a tv show that is 45 minutes. You pause the episode at 30 minutes and watch Trakt for 15 minutes. You see that Trakt keeps running and says you watched the episode after those 15 minutes and adds it to your history, while it should be on pause. When you then continue to watch the last 15 minutes of the show, Trakt is updated and sees it as if you are watching it for the second time and adds it to your history.
So, Trakt should no longer be updated when you paused the episode or movie you are watching.