Is there a way to stop my Galaxy S6 from popping up the recent apps menu without me touching it?

[AC Question]

This morning my phone has been acting strangely. It keeps popping up the recent apps menu without me touching it and even if I do try to use my phone for any purpose it keeps bringing up the recent apps menu. Is there a way for me to disable this or should I just go to my provider's store tomorrow to get it checked out?