Wrong result on 2nd execution for PS with NULL on MAX function and IN predicate

CREATE TABLE t1 (a INT) ENGINE=MyISAM;

CREATE TABLE t2 (b INT) ENGINE=MyISAM;

INSERT INTO t2 VALUES (1);

prepare stmt1 from "SELECT MAX(a), a in ( SELECT b FROM t2 ) AS bb FROM t1";

execute stmt1;

execute stmt1;

prepare stmt2 from "SELECT MAX(a), a >= ALL ( SELECT b FROM t2 ) AS bb FROM t1";

execute stmt2;

execute stmt2;

deallocate prepare stmt1;

deallocate prepare stmt2;

drop table t1, t2;

prepare stmt1 from "SELECT MAX(a), a in ( SELECT b FROM t2 ) AS bb FROM t1";

execute stmt1;

MAX(a)	bb

NULL	NULL

execute stmt1;

MAX(a)	bb

NULL	0

prepare stmt2 from "SELECT MAX(a), a >= ALL ( SELECT b FROM t2 ) AS bb FROM t1";

execute stmt2;

MAX(a)	bb

NULL	NULL

execute stmt2;

MAX(a)	bb

NULL	1

prepare stmt1 from "SELECT MAX(a), a in ( SELECT b FROM t2 ) AS bb FROM t1";

execute stmt1;

MAX(a)	bb

NULL	NULL

execute stmt1;

MAX(a)	bb

NULL	NULL

prepare stmt2 from "SELECT MAX(a), a >= ALL ( SELECT b FROM t2 ) AS bb FROM t1";

execute stmt2;

MAX(a)	bb

NULL	NULL

execute stmt2;

MAX(a)	bb

NULL	NULL