Green artifacts in sequencer

A small update:

  1. There are 6 shots in this sequence
  2. Each shot that uses a camera that is attached to the main actor has this green stuff at the start of the shot
  3. Each camera that is not attached to this actor (i.e., is not attached to anything) has no green stuff at the start of the shot

I suppose a work around is to detach the camera from the actor if a solution can’t be found, but that would change the shots to an undesirable outcome.