Just a quick bug report now I know what’s happening:
If you have configured OpenFire for LDAP and go to the server settings and enter in a Base DN with spaces in it (e.g. OU=My Org Unit) then when saving it will have quotes added around it (e.g. OU=“My Org Unit”). When editing again however, it gets truncated at the first double-quote, so all that appears in the field is OU=
Even testing an OU with spaces will cause it to get cut off when the test is complete.
This is with OpenFire 3.6.4