See, the problem was discovered when I was working on the Sweelinck motet that I just wrote about. VS resolutely refused to pronounce the Latin word 'Noë' as anything other than a kind of nasal wheeze.
The solution wasn't as painful as I'd feared. You just have to type 'No[#+N+AW]-e[#+EI]' every time you want That Word. Yep, that's the dreaded Fragment Notation. Could have been worse, eh? except that the motet contains more than 50, and less than 100 (no, I'm NOT counting!) occurrences of 'Noë'... all needing to be hand-edited *sigh*.
The bug report is in. My work is done. *snore*