Meta description pulling in HTML with JCE

Hi. The title is pretty self-explanatory. I am using JCE Editor, and the meta description is full of HTML. This does not happen with BB Code. It looks especially bad on Facebook, and on pages with an image embedded the meta description just ends up being the img tag!

I am not sure if this is an issue with JCE or with ED. Please advise where to go from here.

Thanks!