Draggable on img invokes Chrome's drag behavior

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When I use draggable on an img, it first does the browser's drag behavior, rather than doing the expected drag action. Once I release the mouse button, the img moves around with the cursor (the expected behavior when the mouse is down) until I click on the image again.

If I add a handler to the mousedown event that calls preventDefault, this problem doesn't happen.

Here is a fiddle: ​http://jsfiddle.net/2CJEf/4/

From what I can tell, the problem happens in Chrome and Safari, but not Firefox. I haven't tried any other browsers.

This looks a lot like #6223, and related to #5678.

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Oh, by the way, if you look at the fiddle, jQuery UI is added under the manage resources section! I couldn't find a way to use the jsFiddle Choose Framework panel to add 1.8.2. This issue does not occur in 1.8.18