Yes, it seems my edit to the previous post (noting that I know the long post did go up, because I made an edit to it after posting) has also not deigned to appear.
I’m too beat now, but I’ll write up the long post again tomorrow. *sigh*
The short version is that this is still an issue: both opening and closing parenthesis need to depend on Series Title, which I can’t see any way of doing when Series Volume intervenes. You either get the closing parenthesis tacked on to the title if there’s no series, or you get a missing parenthesis if there is a series but no series volume number. :-/