The following doesn't complete (shutdown) in a short period of time as expected (checked on MacOS/arm64)

        for (int i = 0; i<10; i++) {
            try (var stof = new StructuredTaskScope.ShutdownOnFailure("name", r -> Thread.ofPlatform().unstarted(r))) {
                stof.fork(() -> {
                    Thread.sleep(Duration.ofMinutes(5));
                    return "result 2";
                });
                stof.fork(() -> {throw new RuntimeException("exception 1"); });
                stof.fork(() -> {
                    Thread.sleep(Duration.ofMinutes(5));
                    return "result 3";
                });
                stof.join();
            }
        }


No problem seen if switching to Thread.ofVirtual() (and any number of iterations)