If your menus or widgets screens broke…

WordPress 3.0.5 was released at the same time as jQuery 1.5. Unfortunately, 1.5 has some backwards incompatible changes that appear to break a number of areas in the adminadmin (and super admin). The timing is awkward and it looks like it was us. It wasn’t.

There’s nothing we can do about this even for WordPress 3.1, which is freezing at jQuery 1.4.4.

If your theme deregisters jQuery and re-registers jQuery 1.5, then you’ll want to make sure that this change only applies for the frontend, i.e. ! is_admin(). (Or use the wp_enqueue_scripts hook, which only fires for the theme-side.) This might not be obvious — if you’re enqueueing the latest jQuery from, say, Google’s CDN, you’ll be getting 1.5 suddenly, and things will break.

Someone should put together a quick pluginPlugin A plugin is a piece of software containing a group of functions that can be added to a WordPress website. They can extend functionality or add new features to your WordPress websites. WordPress plugins are written in the PHP programming language and integrate seamlessly with WordPress. These can be free in the WordPress.org Plugin Directory https://wordpress.org/plugins/ or can be cost-based plugin from a third-party that restores and enforces the bundled jQuery in the admin. I’ll do it later tonight if no one else does.

Reference: #16508 and numerous support forumSupport Forum WordPress Support Forums is a place to go for help and conversations around using WordPress. Also the place to go to report issues that are caused by errors with the WordPress code and implementations. threads.