No sound when publishing video

Hello,

I have an issue with video publishing in storyline 360.

My project includes 3 videos, all 3 with sound. When publishing a video from this project, in the resulting video, only the first and the last one have sound.

No issue in preview, it's only on the published output.

I try to add the audio track as a separate object on the slide, and the result is the same.

The slide where this video is included has a layer, which is not the case of the other 2 videos.

can you help me to solve this problem ?

 

Best regards,