Images Cut Off in the WordPress Image Editor
So, I’ve just spent the last half hour tracking down this annoying bug in WordPress
I’m really glad I use an outdated theme (or at least one without custom header support) so I could track this puppy down.
I have been working on building a theme that is a child theme of good ‘ol 2010 (2011 wasn’t out when I started building
)
I uploaded a portrait image and noticed it got cut off in the image editor like so:

The editor’s will really need to be able to adjust that thumbnail image, so I went digging around and found that a theme called “Modfolio” had this exact same problem. So, I figure, it’s gotta be something with the theme. Especially since I didn’t get a whole lot of results…if it was a core issue and everyone was seeing this then I would assume there would be a lot more complaints.
I switched around from my child theme, to 2010, and even 2011, but the same error kept popping up :/ Then I figured I’d check it out in my blog here. I’m currently using a slightly modified version of Uchilla theme – which hasn’t been updated in ages. And lo-and-behold the image is coming up fine and dandy in the editor. I could be wrong on this, but I believe the only file in a theme that can mess with the admin side of things is the functions.php file. So I just kept hacking away at it until I found the bit of code that was causing me grief.
It’s lines 117 & 188 in the functions file for 2010:
define( 'HEADER_IMAGE_WIDTH', apply_filters( 'twentyten_header_image_width', 940 ) ); define( 'HEADER_IMAGE_HEIGHT', apply_filters( 'twentyten_header_image_height', 198 ) );
That was somehow adding a constraint to the editor preview and for me simply commenting out those two lines did the trick
I did have to re-upload all the affected images though…
I don’t know what effect that might have on the custom headers…I’m not using them myself so it wasn’t an issue for me.
