Wordpress 3.1.2 Bug: add_theme_support() and video post format registering twice

Question

Ive been experiencing a problem with the new WordPress 3.1.2 update. When i use add_theme_support(); and register an array of post formats, it registers all of them fine, but when it comes to the video post format, it registers it twice, and gets called post-format-video-2.

This is the way im writing out the code:

add_theme_support( 'post-formats', array( 'aside', 'gallery', 'image', 'link', 'video' ));

Ive tested this out both on my theme, and the twentyten theme. The problem is exclusive to the video post-format. Its really strange. Additionally when you declare a "posts" format as "video" upon publishing or updating, the post-format meta box adds a new radio button with a new post format without a slug/name.

Illustration (where numbers are the radio buttons):

1. Aside
2. Gallery
3. Image
4. Link
5. Video

Despite only showing 5 radio buttons, upon updating/publishing, a new radio button appears, and it gets selected (radio button 6) rather than the one I chose (radio button 5).

Ive used the add_action( 'after_setup_theme', 'foobar' ); on my theme with no luck. Of-course this comes standard with twentyten.

Any ideas?

Answer 1

Thanks to @goldenapples and @kaiser for their guidance. Apparently (for some odd reason) i had two terms registered with post-format-video. Im not sure if the following can be a viable solution to the problem, but i fired up Workbench and deleted both rows in the wp_terms table. I then reloaded the local site, created a post under the video post-format, and finally.. its resolved. One "video" post-format was registered both in the post-format meta box and the wp_terms table.

I'll leave the intricacies of why this happened and how this worked to the wise.

Either way. I reported this problem to the wp hackers list.

Thanks guys.