It does, some themes in how they add featured images to post actually remove it from plugins. Which theme?
It’s my own theme,
this is what i have in my functions file
add_theme_support( 'post-thumbnails' );
add_theme_support( 'post-thumbnails', array( 'post' ) ); // Posts only
add_theme_support( 'post-thumbnails', array( 'page' ) ); // Pages only
add_theme_support( 'post-thumbnails', array( 'post', 'movie' ) ); // Posts and Movies
Fixed it, change the code to this…
add_theme_support( 'post-thumbnails' );
set_post_thumbnail_size( 825, 510, true );
Yes thats it. When you specifing a post type using add_theme_support you actually disable all other instances in plugins. Thats caught me a few times. Strange that it works that way.