You know how sometimes you're posting and for no reason *poof* everything you've written is gone?
It happened and without thinking, I refreshed my screen (the little almost-closed circle with an arrow on it in the browser header) and *POOF* - it all came right back, and let me pick up typing where I left off.
I'm using Chrome on Windows 10. Have no idea why it worked - I don't even have any idea why it poofs to begin with; it's possible one of the ad-churners has chosen that moment to churn and for whatever reason makes the content in this box disappear - just glad it did. Try it if you get *poof*'ed and let us know if it worked for you?