Reordering slides in Storyline 360

Hello,

When I drag a slide to a new position, then preview my story, the player still lists the slides in the original order and it now appears to jump around instead of following the linear path I created. The slides do appear in the correct order, it's just the player sidebar displaying them in a different order. I may or may not have attached a short video displaying the behavior. 

I hadn't had this problem when I used Storyline 2, but now I'm using Storyline 360.