Why do midjourney videos create images of hair and clothing that extend beyond the original image?

Why do midjourney videos create images of hair and clothing that extend beyond the original image?

https://reddit.com/link/1p4l9l6/video/3xgawbhe003g1/player

submitted by /u/vinxtremis
[link] [comments] https://www.reddit.com/r/midjourney/comments/1p4l9l6/why_do_midjourney_videos_create_images_of_hair/