In Editor 4.2.1:
From Toolbar
- Matinee → Add New
- Tracks tab → Add New Empty Group
- RMB on New_Group → Add New Sound Track
- LMB drag over the timeline to scrub
In Editor 4.2.1:
From Toolbar
Hi cdrebeld,
I was able to reproduce this and have attached this page as well as my own findings to a bug report to be assessed. Thank you and have a great day!