I’ve had this same issue with Level Sequence in 4.12.3. Needed to do something where a sequence was paused and then started playing again, couldn’t make it work in the final Packaged Game with the Play node. Since it just involved Camera and Audio fading, I wound up just using the Camera Manager’s various “Camera Fade” nodes along with pushed and popped Sound Class Modifiers. More here: Fade in/out without Matinee? - Cinematics & Media - Epic Developer Community Forums