Hive complex types column query result error when "create table as select"

hive> CREATE TABLE struct_table(info map<string, array<int>>);
hive> insert into struct_table values (map('test', array(1,2)));
hive> select * from struct_table;
OK
{"test":[1,2]}
Time taken: 0.245 seconds, Fetched: 1 row(s)


hive> create table struct_table_bak as select * from struct_table;
hive> select * from struct_table_bak;
OK
{"test":null}
Time taken: 0.102 seconds, Fetched: 1 row(s)