Congratulations to the whole team on this new version, with some very interesting new features.
I just tried adding sound to some multiple transitions; there are 10 variations. When I added sound to the first transition, everything was fine, but once I added sound to the second transition, the sound from both transitions played in all of them, even in those where I hadn't added sound yet.
If I added sound to the third transition, all three sounds played in every transition.
I finished with all 10 transitions, and no matter which transition I used, the sound from all 10 audio tracks played simultaneously.
In the first transition, there's a sound that's completely unrelated; I included it to illustrate the problem.
Regards.
Transitions: https://www.mediafire.com/file/895mn7daqkvttsm/Vidrios+Rotos.pteeff/file