ใLost a few paragraphs because I accidentally swiped on the wrong area when switching tabs, so I started messing around the composer but couldn't find out how to trigger auto draft saving hence this suggestion.
ใ We have one for replies, why not one for new posts too? 
Edit:Typo
It would be nice when we post to this forum, that it keeps a saved copy in the background until we are ready to submit. Usually when submitting a post here, I lose it when I have to go to another screen for reference, in order to complete this post. When I return, everything is gone and I have to start over.
If drafts are saved while momentarily going to another tab, or elsewhere, when I return I can continue where I left off instead of having to start all over again.
EDIT-
You might get more images/videos attached to support requests if this is fixed.
