Multiple start screens when repeatedly pressing the back button

[Starboy21]

I was just pressing the back button of my lumia 540 n aftr pressing it for like 2-3 times when the task manager comes up it showed up with two start screens running has anyone experienced the same thing..

 

[T Moore]

Hold the tap on the back button and swipe down on all screens.

 

[Starboy21]

Found a video similar to this :
https://m.youtube.com/watch?v=5fYjCe5j07c