In Articulate Storyline, you can choose which features appear on your course player, such as the sidebar, navigation buttons, seekbar, and volume control. You can even show or hide different player features on a slide-by-slide basis. But you may find that the player features are wrong for some slides in your course when both the following conditions are true:
In this scenario, the correct player features usually appear for a brief moment, and then they change to match the player features from the previous slide.
This issue was corrected in Update 3 for Storyline. To take advantage of the new features and fixes, download and install the latest version of Storyline from the link in your product confirmation email, or get it here. Then republish your Storyline project.