Accordion not responding after update to WP 3,6

On a clean WordPress 3.6 install, my doesn’t go kaput, but it causes some really weird flashing. I will click on an item, see the item expand, have the screen flash white for a second, and the page return. I’m using the menu class and disable class setting so that the menu doesn’t try to use the normal navigation menu class for one theme. On another theme, I don’t have these set. Yet the problem still shows up.

Interesting to note, I only seem to have my problem with Chrome and IE. Firefox is fine.