Adobe Animator - Sound from previous scene looping in next

When I export a video with more than 4 scenes the audio file from scene 4 starts to play again in scene 5 on top of scene 5's audio. This happens with every video with more scenes than 4. The problem also exacerbates further as both scene 4 and 5's audio will then loop again in scene 6 on top of the scene 6 audio. 

I can't find any reason why the audio loops. In PROPERTIES under SOUND - EFFECT is set to STREAM and SYNC is set to  REPEAT (not Loop). I've deleted the audio and incerted a new audio in the problem scenes, but the problem persists. My only solution is to render out every scene seperately and render them out again in Aftereffects, which is an extreme inconvenience and doubles my workload. 

Please help me fix this problem.

(problem begins 3:03 in the mp4 file)