Automatically Logging Out While Composing

Hi Guys - I hope your holidays were great.

I have found while working on an article for an extended period of time, somehow, I get automatically logged out of the site, and my blog article is lost forever. I have attached screenshots when I try to "X" out of the article and when I try to save for later. You'll see I get error messages.

When I go looking for the article after re-logging in, it is nowhere to be found. Also, what's the point of the "Drafts" page if the drafts you are working on don't show up there? Is there a timeout setting other than the Joomla one?

Thanks,
Mike