Moto x going back to the home screen when pressing multitask button

[AC Question]

For some reason my moto x 2014 keeps going back to the home screen when pressing the multitasking button. Same thing happens when saying my launch phrase with moto voice, it detects it, but then moto voice closes and goes back to the home screen without me pressing anything. Does anybody have any idea what could cause this problem? Maybe an app?