Multithreaded slave replication dead lock when set super_read_only to ON

how to repeat:

(1) master-slave, enable multithreaded replication.

slave_parallel_type=LOGICAL_CLOCK

slave_parallel_workers=16

slave_preserve_commit_order=ON

(2) write data on master by sysbench

(3) execute sql on slave continually，sql:
set global super_read_only=OFF; set global super_read_only=ON;

when dead lock occur, show processlist as below: