This was discovered when I wanted to capture a physics bug and was joked to capture it in Sequencer. When attempted, it accurately captured what happened when played in the viewport, but when it was rendered into a video, it was not accurate at all. There is something about the vehicle that doesn't render properly when rendering the movie.
This does happen in 4.14 as well as 4.13 - Not a regression
Result: The recorded movie is vastly different from what was recorded in the viewport
Expected: The movie would be accurately captured from the gameplay
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-38852 in the post.