Screen Options mixing

I just noticed that this plugin is doing something weird. When I add a new post (i.e. in the post edit screen), if I click the Screen Options panel, I can see checkboxes for the default columns that are attached to the post’s table listing. Checking/unchecking these boxes won’t actually do anything, but it is weird to see them there.

http://wordpress.org/plugins/codepress-admin-columns/