I did some more debugging, and I found that it goes wrong in this function, in CoWork.cpp on line 196. It will wait infinitely until jobs are done, while there are still jobs to be done.

void CoWork::Finish() {
	if(!pool) return;
	Pool& p = *pool;
	p.lock.Enter();
	while(todo) {
		LLOG("Finish: todo: " << todo << " (CoWork " << FormatIntHex(this) << ")");
		if(todo == 0)
			break;
		if(p.scheduled)
			Pool::DoJob();
		else {
			p.lock.Leave();
			LLOG("WaitForFinish (CoWork " << FormatIntHex(this) << ")");
			waitforfinish.Wait(); // <---- Infinite wait here!
			p.lock.Enter();
		}
	}
	p.lock.Leave();
	LLOG("CoWork " << FormatIntHex(this) << " finished");
}

It is a very annoying bug.

Thanks,

crydev