Can anyone else notice and report that if a new image size is created that starts with 'thumbnail-', then in the admin area of Wordpress, this new size is used as the default for featured image sizes, instead of the default 'thumbnail'?
When I created add_image_size('thumbnail-large', 300, 300, true), and regenerated my thumbnails, I notice that the featured image size in the sidebar in admin is now showing this new image size, by default.
I didn't want this behaviour, and wish to revert to the original default featured image size for admin. Can anyone replicate this bug?