Experience manager not showing changes made to document unless saved

Hi there,

Logged in as user autor I see that document changes made in Experience Manager (EM) are only shown in the EM on the page if the document is saved. If the changes are not wanted it seems author cannot undo the changes, the only option is to publish, as discard is disabled, which will generate a publish or unpublish request, the only action the author can take is cancel request.
Is there a way to discard the changes made as author?