I am trying to use the Map bookmarklist tool to map a certain list. It is this one:
It is owned by a user that is called "Jimbo+hap.dk". As you may have noticed, they have a plus sign ('+') in their name.
Autocomplete for the Owner field at the Map bookmarklist stops suggesting names when you get to the plus sign (no suggestions). If you type it all in yourself and click "Get lists", the drop-down menu comes up empty.
The list in question is very much public/shared, so I am guessing something is up with the handling of the plus sign.