LiteSpeed pre-compile <location...> <Directory...> directives, this <directoryMatch ...> directive is intended to match document root directory of all web sites, so it will match all requests and causes other "...Match" directives being ignored as LiteSpeed always use the first match.
The solution is to treat this as a special case in LiteSpeed.
Are you using plesk? Which version?
Does /etc/httpd/conf.d/zzz_php_openbasedir.conf belong to the default template? or added manually?
Does your patch to <DirectoryMatch...> configuration work or not?