(ITS#7939) Unable to filter on "(objectClass=glue)"

[quanah@openldap.org]

Full_Name: Quanah Gibson-Mount
Version: 2.4.39
OS: Linux 3.11
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (75.111.58.125)


When trying to find a set of broken entries, I found that it is impossible to
filter on objectClass=glue:

[zimbra@ldap01 ~]$ ldapsearch -x -LLL -D $zimbra_ldap_userdn -w
$zimbra_ldap_password -H $ldap_url -b
"ou=people,dc=xxx,dc=xxx,dc=xxx%2%2"(objectClass=glue)" 1.1
[zimbra@ldap01 ~]$ echo $?
0

I am immediately returned to the prompt, and the error result is success (0). 
Instead, I expect all the broken glue'd objects returned instead.