InnoDB: Failing assertion: table->get_ref_count() == 0 upon dropping temporary table with unique blob

--source include/have_innodb.inc

CREATE TEMPORARY TABLE t1 (f BLOB, UNIQUE(f)) ENGINE=InnoDB;

INSERT INTO t1 VALUES (1);

REPLACE INTO t1 VALUES (1);

DROP TABLE t1;

2019-02-27 00:00:53 0x7fb6b060a700  InnoDB: Assertion failure in file /data/src/10.4/storage/innobase/dict/dict0dict.cc line 1981

InnoDB: Failing assertion: table->get_ref_count() == 0

#5  0x00007fb6b72e93fa in abort () from /lib/x86_64-linux-gnu/libc.so.6

#6  0x0000556ddd52decc in ut_dbg_assertion_failed (expr=0x556dddbbdbd4 "table->get_ref_count() == 0", file=0x556dddbbdd78 "/data/src/10.4/storage/innobase/dict/dict0dict.cc", line=1981) at /data/src/10.4/storage/innobase/ut/ut0dbg.cc:60

#7  0x0000556ddd5e6be3 in dict_table_remove_from_cache (table=0x7fb66800e1b8, lru=false, keep=false) at /data/src/10.4/storage/innobase/dict/dict0dict.cc:1981

#8  0x0000556ddd472128 in row_drop_table_for_mysql (name=0x7fb6b06076c0 "mysqld.1/#sql39e5_9_0", trx=0x7fb6b10f1268, sqlcom=SQLCOM_DROP_TABLE, create_failed=false, nonatomic=true) at /data/src/10.4/storage/innobase/row/row0mysql.cc:3372

#9  0x0000556ddd325b94 in ha_innobase::delete_table (this=0x7fb668015c10, name=0x7fb6681a0ee0 "/data/bld/10.4/mysql-test/var/tmp/mysqld.1/#sql39e5_9_0", sqlcom=SQLCOM_DROP_TABLE) at /data/src/10.4/storage/innobase/handler/ha_innodb.cc:12953

#10 0x0000556ddd3123c7 in ha_innobase::delete_table (this=0x7fb668015c10, name=0x7fb6681a0ee0 "/data/bld/10.4/mysql-test/var/tmp/mysqld.1/#sql39e5_9_0") at /data/src/10.4/storage/innobase/handler/ha_innodb.cc:13082

#11 0x0000556ddcfcae5e in handler::ha_delete_table (this=0x7fb668015c10, name=0x7fb6681a0ee0 "/data/bld/10.4/mysql-test/var/tmp/mysqld.1/#sql39e5_9_0") at /data/src/10.4/sql/handler.cc:4782

#12 0x0000556ddceedfa5 in THD::rm_temporary_table (this=0x7fb668000b00, base=0x556ddf894350, path=0x7fb6681a0ee0 "/data/bld/10.4/mysql-test/var/tmp/mysqld.1/#sql39e5_9_0") at /data/src/10.4/sql/temporary_tables.cc:683

#13 0x0000556ddceefcdd in THD::free_tmp_table_share (this=0x7fb668000b00, share=0x7fb6681a0940, delete_table=true) at /data/src/10.4/sql/temporary_tables.cc:1443

#14 0x0000556ddceede09 in THD::drop_temporary_table (this=0x7fb668000b00, table=0x7fb66800d120, is_trans=0x7fb6b0607eeb, delete_table=true) at /data/src/10.4/sql/temporary_tables.cc:646

#15 0x0000556ddcd51e81 in mysql_rm_table_no_locks (thd=0x7fb668000b00, tables=0x7fb668015560, if_exists=false, drop_temporary=false, drop_view=false, drop_sequence=false, dont_log_query=false, dont_free_locks=false) at /data/src/10.4/sql/sql_table.cc:2322

#16 0x0000556ddcd516db in mysql_rm_table (thd=0x7fb668000b00, tables=0x7fb668015560, if_exists=false, drop_temporary=false, drop_sequence=false) at /data/src/10.4/sql/sql_table.cc:2114

#17 0x0000556ddcc81b8e in mysql_execute_command (thd=0x7fb668000b00) at /data/src/10.4/sql/sql_parse.cc:5111

#18 0x0000556ddcc8c158 in mysql_parse (thd=0x7fb668000b00, rawbuf=0x7fb6680154a8 "DROP TABLE t1", length=13, parser_state=0x7fb6b0609180, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:8157

#19 0x0000556ddcc77846 in dispatch_command (command=COM_QUERY, thd=0x7fb668000b00, packet=0x7fb668139fd1 "DROP TABLE t1", packet_length=13, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:1829

#20 0x0000556ddcc7601a in do_command (thd=0x7fb668000b00) at /data/src/10.4/sql/sql_parse.cc:1358

#21 0x0000556ddcdefc07 in do_handle_one_connection (connect=0x556ddfc199d0) at /data/src/10.4/sql/sql_connect.cc:1399

#22 0x0000556ddcdef978 in handle_one_connection (arg=0x556ddfc199d0) at /data/src/10.4/sql/sql_connect.cc:1302

#23 0x0000556ddd2e6951 in pfs_spawn_thread (arg=0x556ddfc5f840) at /data/src/10.4/storage/perfschema/pfs.cc:1862

#24 0x00007fb6b8fb7494 in start_thread (arg=0x7fb6b060a700) at pthread_create.c:333

#25 0x00007fb6b739d93f in clone () from /lib/x86_64-linux-gnu/libc.so.6