Slide length increasing apparently randomly.
I have audio on all my slides and a next button that appears at the end of the timeline. I have ensured that the timeline ends at the end of the audio on all my slides. This was time consuming as there are 160 slides in total. The problem is that the slide length unexpectedly increases so that the audio ends and there is a long pause before my button appears. I cant reproduce this intentionally and i am not sure why it is happening...but I am finding it annoying! Is there any known explanation? Thanks