Do you by any chance work in multiple devices or multiple tabs / windows? This MAY happen if you had the same article open in a different device opened and then made an edit that will reverse previous changes. it is one of the reasons that working on multiple tabs may be a bit dangerous.   Another reason, less likely is that you used in your article non-canonical characters like a weird emoji

Assigned Dimitris

I am closing this since I have received no reply for over a week - please feel free to reply here with any updates.

Dimitris Added tag Waiting for Response

set this bug to closed

I'm so sorry. I didn't relies I would get a reply. I thought it would just be clumped up with other similar complaints and be fixed whenever an update would happen, so I haven't thought to open this site back up. But um I did have another tab open, but it was on the list of steps to take so I knew what to do whenever I was done filling out the meta portion. I unfortunately have a scatter brain and new that I would get lost when I needed it.