I want to get a list that "user" is "patroller" and "blocked"

my query:
https://en.wikipedia.org/w/api.php?rawcontinue&action=query&list=allusers&augroup=patroller&aurights=block&aulimit=50&auprop=blockinfo

but the api returns users that is not blocked?

aurights=block is not working probably?

is it bug on api or am i use wrong?