I'm curious about this myslef. I too use an Elegant theme and I'm wondering if the SEO settings in the epanel conflcit at all with the Yoost SEO settings.
I'm getting a lot of double title listing on the search engines. Example:
Bucket List | The Breakfast Ball | The Breakfast Ball
It's happeing for all of my pages on a seacrgh result. There isn't a way to completely disable the Elegant Themes SEO, if you choose not to use a custome title it has a default setting that cannot be disabled.