Ron - This appears to be broken.

But when I create a new page and create some bullet points and then edit List Properties.

Was this file created initially in on older version? And if so I wonder if the changes made to the text tool have effected this editing.

OK. I just copied and pasted your bullet text into a new document and everything edits perfectly. So that is the solution. Create a new document and copy and paste your text into the new document then edit.

Does this work?