Steps to reproduce:
- Create a new project, add tears of steel,
- Press the button to add two clips to the timeline
- Shift+drag the first clip to the right, notice both clips move
- Continue the shift+drag operation to the left, notice vertical blue bar flickering
- Drag the 2nd clip to the left a bit, notice a transition clip is created with the video part longer than the audio part. They should be equal.