Subquery with CTE does not see tables from the outer query

create table t1 (i int);

create table t2 (j int);

# This of course works:

select * from t1 where exists ( select * from t2 where j = i );

# Empty set (0.01 sec)

# But this does not:

select * from t1 where exists ( with cte as ( select * from t2 where j = i ) select * from cte );

# ERROR 1054 (42S22): Unknown column 'i' in 'where clause'