[Dovecot] Possible bug in shared namespace variable?

As you would have seen earlier I've created a shared mailbox with the following namespace:

namespace { type = shared separator = . prefix = Shared.%%n. location = maildir:/var/vpopmail/domains/%%d/%%n/Maildir:INDEX=~/Maildir/Shared/%%n subscriptions = no list = children }

This works perfectly, but for some reason the %%n variable in the location maildir is blank. Everywhere else %%n is used works (e.g. the prefix and INDEX).

This means for the shared mailbox under support@mailbox.com I get a folder Mailder in the domain folder:

/var/vpopmail/domains/mailbox.com/Maildir instead of /var/vpopmail/domains/mailbox.com/support/Maildir.

Has anyone else come across this?