glossary template buglet?

In the default titlepage template for glossary, the title is formed from:

<title t.named-template="component.title" [...]

That seems wrong! In the manual that I'm hacking, that used the book's title at the top of the glossary.

Changing it to use "division.title" made the expected glossary/title appear.

Is this the correct fix? I am not very comfortable with the titlepage templates...

Chris