Unexpected behavior in Properties

Added a few properties at the top of a page - got some puzzling results:

  1. title:: disappears as soon as you navigate out of this area
  2. subtitle:: - in this case, a sentence with a few commas - each group of words is being treated as a tag and is linked to a new page

So, what am I doing wrong, if anything?

The title is a special property and it is hidden intentionally.

You have to wrap the whole sentence with quotes to prevent ´╗┐auto-linking.