clarkwinkelmann Thanks for reply Clark! Very good explain!
mmm... yes, you are right!. Testing with freeflarum and this extension and autosave is not enabled in the user profiles. Need to do manual.
In my case no need the autosave option, I only need this extension to draft a large messages.
Only a tip:
Maybe possible in next updates... add a option in the admin panel to delete the autosave button for all users profiles? To avoid the possibility to activate the autosave per user.