Well, I started to write posts on our forum. Today I was composing a post and the 'auto save' notification appeared several times while I was doing this. Then I decided to preview the post. A dialog with two buttons telling me that I have a draft message appeared. I do not remember which button I clicked, but all this ended with showing me a half of the text I typed (an earlier version of my post).
I tried to reproduce this but no luck. As for me, this new auto-save system is unstable and works with issues hard to reproduce. Is there a way to configure it and turn it off if required?