URL of your site, please.
Can you replicate the problem while using a default (2013) theme and with all plugins disabled?
Just tried it and it works if thats done
I see you already switched back, huh? Well, you should pin point if it’s a theme or a plugin problem.Maybe you should deactivate all and then switch on the theme and/or plugins one by one (constantly checking who’s the culprit). Good luck
Thanks, although I haven’t actually downloaded any new plugins since the wp-update when i had to update the jQuery for the drop down so I can’t see it being a plug in.