Role grant commands do not propagate all grants

create role r1, r2;

create user foo;

create database some_db;

create table some_db.t1 (a int, b int, secret int);

grant r2 to r1;

grant r1 to foo;

grant select on *.* to r2;

grant insert on *.* to r1;

# flush privileges; # Adding flush privileges causes the second select to work as expected.

--connect (con1, localhost, foo,,)

--error ER_TABLEACCESS_DENIED_ERROR

select * from some_db.t1;

set role r1;

# This command should receive the select rights from r2 and thus be allowed

select * from some_db.t1;

disconnect con1;

connection default;

drop database some_db;

drop role r1, r2;

drop user foo;