Hi,
I am also having this problem. The weird thing is that I’m running 2 sites with the same plugins and settings. 1 site is having this problem, the other one does not have this problem. So, I do not think this is a plugin problem. This problem is making Firefox frieze, and I need to restart Firefox to make it work again.
The content under “Hide Meta” are getting hidden, when the plugin “White Label CMS” is installed and active. Even this functionality is not activated in “White Label CMS”
