Card name rejected despite no bad characters+example

Go to Bugs+examples and click on "Add +hard template save bug". You get an error:
Problem with card Bugs+examples+hard template save bug:
Name may not contain any of the following characters: / ~ |
...but there are no such characters in the name! (Note that this is not the problem the example was designed to show.)

  --John Abbe.....Thu Jan 24 01:24:11 PST 2008