When adding a screen recording to your Storyline project as step-by-step slides, you may find that the clickable areas are highlighted before users click them (as in the image below). This might be useful for View Mode and Try Mode scenarios, but it probably isn’t desirable in Test Mode.
The areas that are highlighted depend on how the information is communicated to Storyline from the application being recorded. However, you can modify each slide in your step-by-step screen recording to adjust these highlighted areas. Use the Action Fine Tuning editor to move the Start Frame back a few frames until the correct response is no longer highlighted.