I've found another minor problem of the serversidefilters plugin.
If "ALLOW_UNSUBSCRIBED" option in config.php is set to true, the
folderdropdown function will use sqimap_mailbox_list_all function
instead of sqimap_mailbox_list, this will end up in folder names not
To be more precise, the sort in sqimap_mailbox_list_all is done against
the first key of boxes array, that is the 'raw' imap folder name, that
contains the "hasChildren"/"hasNoChildren" string and the sort is case
sensitive (and just to mention it, special folders are not considered
I'm not sure if this behaviour is intented.