I am using Franklin Covey's task list instead of the To DO List. When I enter the letters, none would appear on the screen, a bold vertical line would also appear--sometimes 2 or 3 lines would appear. However, when I press the return key, the letters that I had entered would appear normally.Enable the FitalyStamp option "letters at pen up". To activate it do this:
Tap on the information 'i' in the lower left corner
Choose 'advanced options'
Choose 'Set letters at pen up'