ldapmodify olcTLSCipherSuite truncates ciphers recommended by Red Hat

Question

I am trying to modify our SSL Ciphers for slapd using ldapmodify on CentOS7.

openldap-2.4.44-25 is used.

The ciphers I am using are the ones recommended by Red Hat for RHEL7: Strongest available ciphers only

olcTLSCipherSuite: ECDHE-RSA-AES256-SHA384:AES256-SHA256:!RC4:HIGH:!MD5:!EDH:!EXP:!SSLV2:!eNULL

My ldif file looks like this:

dn: cn=config
changetype: modify
replace: olcTLSCipherSuite
olcTLSCipherSuite: ECDHE-RSA-AES256-SHA384:AES256-SHA256:!RC4:HIGH:!MD5:!EDH:!EXP:!SSLV2:!eNULL

The command I am running locally is: ldapmodify -Y EXTERNAL -H ldapi:/// -f ciphers.ldif

What I get is a truncated line:

olcTLSCipherSuite: ECDHE-RSA-AES256-SHA384:AES256-HA256:!RC4:HIGH:!MD5:!aNU$
  LL:!EDH:!EXP:!SSLV2:!eNULL$

The dollar at the end of each line is just the EOL enabled in vim to show that ldapmodify creates an EOL in the middle of the string.

What am I missing?

I tried to use quotes around the string but it did not help.

Using this string also truncates the attribute:

olcTLSCipherSuite: EECDH:EDH:CAMELLIA:ECDH:RSA:!eNULL:!SSLv2:!RC4:!DES:!EXP:!SEED:!IDEA:!3DES

However, using a shorter one works as expected:

olcTLSCipherSuite:  ALL:!ADH:!EXPORT:!SSLv2:RC4+RSA:+HIGH:+MEDIUM:+LOW