UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/51.0.2704.79 Chrome/51.0.2704.79 Safari/537.36

Example URL:

Steps to reproduce the problem:
You can reproduce on any website, although it is of course only a problem if GET /test returns 404 while PUT /test wouldn't necessarily also return a 404. Open the Network tab and run the following code. Observe that the second request says (from cache). It's not lying, the PUT request isn't made.

    var url = '/test'; // Nonexistent location. If it exists it works fine
    var link = document.createElement('link');
    link.rel = 'prefetch';
    link.href = url;
    document.body.appendChild(link);
    setTimeout(function() {
        var req = new XMLHttpRequest();
        req.open('PUT', url); // POST works fine
        req.send('test'); // Without a body it works fine
    }, 500);

What is the expected behavior?

What went wrong?
I'm not sure, but I believe a cached 404 from GET /test shouldn't be returned for PUT /test.

Did this work before? N/A 

Chrome version: 51.0.2704.79  Channel: n/a
OS Version: 
Flash Version: Shockwave Flash 11.2 r999