Since upgrading to WordPress 3.6, one of the most annoying bugs is the fact that drop down/expanding menus no longer work. For example:
Boxes in the admin panel with the little arrow to expand/collapse such as the 'Right Now' box in the dashboard, does not work. This is also true for widgets and the 'kitchen sink' in articles where highlighting text to make a URL no longer works.
However, the biggest problem is within the Gravity Forms plugin. I can add fields, but ONLY the first one will expand, all the others stay closed. Moving them around also does NOT work.
Here's a screenshot: http://i42.tinypic.com/uwvmf.jpg
Beyond adjusting the first field, nothing can be modified rendering the plugin useless now.
It seems like a jquery problem, but I'm really lost on how to fix this.