Assertion `!found' failed in remove_ptr_from_dynarray upon operations with roles

CREATE USER foo@localhost;

GRANT ALL ON *.* TO foo@localhost;

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

CREATE ROLE g;

CREATE ROLE mri;

CREATE ROLE c;

CREATE ROLE rnd;

CREATE ROLE x;

CREATE ROLE ura;

CREATE ROLE y;

CREATE ROLE kauhea;

CREATE ROLE zoo;

CREATE ROLE wonder;

CREATE ROLE u;

CREATE ROLE o;

CREATE ROLE z;

CREATE ROLE q;

CREATE ROLE k;

CREATE ROLE e WITH ADMIN k;

CREATE ROLE ugm;

CREATE OR REPLACE ROLE k;

CREATE USER l;

DROP ROLE k;

mysqld: /data/src/10.4/sql/sql_acl.cc:3521: void remove_ptr_from_dynarray(DYNAMIC_ARRAY*, void*): Assertion `!found' failed.

190820 21:17:42 [ERROR] mysqld got signal 6 ;

#7  0x00007f49da721f12 in __GI___assert_fail (assertion=0x5567384845d1 "!found", file=0x556738483ab8 "/data/src/10.4/sql/sql_acl.cc", line=3521, function=0x5567384866a0 <remove_ptr_from_dynarray(st_dynamic_array*, void*)::__PRETTY_FUNCTION__> "void remove_ptr_from_dynarray(DYNAMIC_ARRAY*, void*)") at assert.c:101

#8  0x00005567377cedc4 in remove_ptr_from_dynarray (array=0x7f49c4182298, ptr=0x7f49b8029048) at /data/src/10.4/sql/sql_acl.cc:3521

#9  0x00005567377e45cf in handle_grant_struct (struct_no=ROLE_ACL, drop=true, user_from=0x7f49b8011ef0, user_to=0x0) at /data/src/10.4/sql/sql_acl.cc:9978

#10 0x00005567377e5656 in handle_grant_data (thd=0x7f49b8000b00, tables=..., drop=true, user_from=0x7f49b8011ef0, user_to=0x0) at /data/src/10.4/sql/sql_acl.cc:10481

#11 0x00005567377e621e in mysql_drop_user (thd=0x7f49b8000b00, list=..., handle_as_role=true) at /data/src/10.4/sql/sql_acl.cc:10722

#12 0x00005567378a06d6 in mysql_execute_command (thd=0x7f49b8000b00) at /data/src/10.4/sql/sql_parse.cc:5235

#13 0x00005567378a92dd in mysql_parse (thd=0x7f49b8000b00, rawbuf=0x7f49b8011e68 "DROP ROLE k", length=11, parser_state=0x7f49d48a8170, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:7908

#14 0x0000556737895586 in dispatch_command (command=COM_QUERY, thd=0x7f49b8000b00, packet=0x7f49b8008331 "DROP ROLE k", packet_length=11, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:1843

#15 0x0000556737893ccc in do_command (thd=0x7f49b8000b00) at /data/src/10.4/sql/sql_parse.cc:1360

#16 0x0000556737a0de00 in do_handle_one_connection (connect=0x55673ab94040) at /data/src/10.4/sql/sql_connect.cc:1404

#17 0x0000556737a0db4f in handle_one_connection (arg=0x55673ab94040) at /data/src/10.4/sql/sql_connect.cc:1306

#18 0x0000556738339f65 in pfs_spawn_thread (arg=0x55673ac33070) at /data/src/10.4/storage/perfschema/pfs.cc:1862

#19 0x00007f49dc2964a4 in start_thread (arg=0x7f49d48a9700) at pthread_create.c:456

#20 0x00007f49da7ded0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97