Thanks for replying. I have found a way to reproduce it and your guess is right.
- Add 3 or more tracks(layers) and add image or some sort to each of the tracks
- Select one of the middle track and remove it
- Undo it
- Scrub to point which images overlap
- The track above the “Undid” layer won’t render
Edit: Just renamed the title of the post to better describe the bug.