Team I don't know if this weren't applicable here..
I would want to suggest that if someone is making post and when he previewed his post before posting there should be a kind of autosave post, whereby if someone mistake tap on the exit tab or window they can easily restore it back immediately they go back to topic the were posting.
The reason I brought this discussion and suggestion is that I have been a victim of this for several occasions I couldn't restore my post after I tried to minimize my browser, all post gone even without me refreshing my page. I think there should be a kind of autosave after preview then if the post wipes off you can copy back post to continue discussion, sometimes when post are lost it makes it very hard to start the discussion allover or like to retype the exact thing you were saying before like one can't be in the mode where she was before the post were lost. If this options are being added it could be easier to just check the draft to copy the post to continue
This can only work if someone previews their post then the post is automatically saved as draft, but in case where the person do not preview then s/he lost the post forever.
I don't know if this discussion had already been discussed here, if any then I don't mind locking this topic to continue with what others has already put down there.