UIWebView call loadRequest multiple times lead to deadlock in iOS12

[crmo]

In iOS 12,if you call loadRequest twice in succession,like this:

[self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"https://github.com"]]];
[self.webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"https://google.com"]]];

webViewDidStartLoad: will callback twice times,but webViewDidFinishLoad: just callbcak once time.like this:

1. didStartLoading
2. didStartLoading
3. didFinishLoad

Everything is correct in iOS 11.Callback sequence:

1. didStartLoading
2. didFinishLoad
3. didStartLoading
4. didFinishLoad

This problem will lead to [CDVUserAgentUtil acquireLock:] block don`t excute.