Double-clicking "Next" button allows learner to skip multiple slides

Thanks for the info, Paul. We definitely have some similarities in our course set-ups. We use:

Restricted navigation
Restricted PREV/NEXT
Modern Player
We never import from PowerPoint. We also incorporate slides that have a variable preventing the user from progressing to the next slide until a certain action flips the variable. When I try double-clicking and the next slide is constrained by a variable, I see the next (correct) slide load, but with our warning message displayed, which tells the user they must complete an action. That message displays when the user tried to click next, which of course they should not even be able to do with restricted navigation, as the slide has not completed (and therefore the next button should not be active).

I'm not sure if any of that info will help you, but thought I'd put it out there. Back before restricted navigation was introduced to Storyline, we used to restrict the next button with a variable on every slide. This could probably still be used as a work-around to this problem, but what a pain!