I've discovered what seems to be a bug when a bibliography gets sorted in Word.

I have a reference to a book with the author 'ANZ Group' entered as a single field. However, when I add a citation to it in Word and create a bibliography, it sorts it by the second word ('Group') instead of the first word.

I am using my own custom citation style, but the problem is not specific to my style. If I change the style to anything similar like American Political Science Association, American Sociological Association or Modern Humanities Research Association the problem persists.

I've played around with it a bit and discovered that it only happens when all of the following are true:

- the single author field has more than one word in it
- the first word is two or three letters long
- the first word starts with a,b,c or d.

It's doesn't seem to matter what type of item it is or how the first word is capitalised.

It's very odd. Has anyone come across this before?