[netsharc]

I recently got the option to save post drafts, so I could type something, it would save it automatically, and I could continue that post in another browser if I wanted (similar to Gmail's compose window). But the option was very visible. I can't recall if I dismissed it forever or it disappeared by itself.

If they're malicious they could wait a few minutes before reporting what you were thinking of posting.. or they're using websockets, which you may have missed.