Table is not eliminated in bb-11.0

explain SELECT c_custkey, c_name AS currency2 FROM partsupp LEFT JOIN part ON (
p_partkey = ps_partkey ) JOIN supplier ON (s_suppkey = ps_suppkey) JOIN lineite
m ON ( ps_suppkey = l_suppkey ) JOIN orders ON ( l_orderkey = o_orderkey ) JOIN
customer ON ( o_custkey = c_custkey ) HAVING c_custkey > 150;
In 11.0 shows the table 'part' which should have been eliminated.
This also causes a small degradation in performance.