Nodes with commas in the title

Great widget; thanks for this. I've run into a problem, however, and I think it's likely because the titles of the nodes I'm referencing contain commas -- person names in "Surname, Given name" order, in this case.

Here's a representative sequence (names changed to protect the innocent):

Doe
-->"Doe, John" [nid:1]
"Doe, John" [nid:27],jane
-->"Doe, John", "Doe, Jane" [nid:2]

Selecting the second node reference deletes the actual reference tag from the first reference.

Doesn't appear to happen unless the first referenced node's title contains a comma.