Hello @user835029 ,
I am sorry that your social post disappeared while editing. The newer Social Inbox for us unfortunately does not have an auto save feature within it. However down in the bottom right hand corner of that window to the left of the ‘schedule post’ button you do have a manual save, that ‘save draft’ grey button would allow you to come back at a later time to finish up your social media post. For auto save, I have summited to our engineers this feature request for you and have tracked that feedback. You will be added to an email notification loop for when it becomes available in product. However I cannot provide a time frame for when auto save would be added.