I am unable to lock all submissions by selecting top checkbox in submissions list. I got error "A required parameter (userid) was missing". But if I select all submissions one by one, then I am able to lock submissions. I tried different browsers, but without success. In debug mode I see this error:

Debug info:
Error code: missingparam

Stack trace:
line 463 of /lib/setuplib.php: moodle_exception thrown
line 545 of /lib/moodlelib.php: call to print_error()
line 6096 of /mod/assign/locallib.php: call to required_param()
line 3353 of /mod/assign/locallib.php: call to assign->process_lock_submission()
line 428 of /mod/assign/locallib.php: call to assign->process_grading_batch_operation()
line 53 of /mod/assign/view.php: call to assign->view()