
Deliberate mistake: When the computer has been launched, Lister walks into the drive room and notices the computer and stands behind Kryten and Rimmer. But when the camera is focused on the computer, there is no sign of Lister what so ever. (00:10:00)
Suggested correction: What's deliberate about this? It's just a mistake.
This is not a valid correction. You should simply try to change the mistake type instead of correcting a mistake if it is not classified correctly.