I decided to insert a 'text' field in the bottom row that will be the footer for the site. I did have a sub-grid and just deleted that. When I dragged a text element to the row I noticed there were two entries and the bottom one had sort of 'fancy' text.
Usually when I do these kind of things I save after everything I do. I happened to look up at the elements because of the second entry and there was no more 'Text Element'. It had disappeared. I didn't save and closed the app., reopened and the 'Text Element' was back where it was before.
I don't know what caused this or if it's a bug. If it happens again I will put in a support ticket.
Has anyone ever had this happen before?