Return/reset after tablet display off to previous page after a certain time

I have the problem with the Android app that the called series episode after a certain time of the tablet display a jump back to Up Next takes place.

When I watch an episode of a series, I like to open it directly in the Trakt app via Up Next. The tablet display is switched off after a while or I surf in the background with the web browser. Display goes off again and at the end after 30/45min I turn the display back on and Up Next is loaded in the Trakt app. That means I have to search again the episode / series (if broadcast via streaming service in advance).
The same happens when I go over the series, select season and call episode here. After a certain time I am then on the season overview of the series and not on the called episode.

Why is a reset to the previous page always made here?