Why are there red lines at the edges of my CRPL core's size box thing? (w/image)

[StardustAlpha]

Also, that title is at the character limit for titles.

[GoodMorning]

The red lines are part of the placeholder image for invisible Cores. It only shows up in edit mode. They are on all sides, but usually too small to notice.

The title character limit is there to encourage you to put things in the body of your post.