Draggable: reports different coordinates for SVG element in Firefox and Webkit

[rrt]

Please see the example at ​http://jsfiddle.net/rrthomas/v477X/11/

When the black rectangle is dragged, the coordinates reported to the drag event are relative to the svg element in Webkit, and relative to the rect element being dragged in Firefox. The browser-specific code patches this up, but it looks like jQuery(UI) is reporting different coordinates in the two browsers.

Note that the jsFiddle uses jQueryUI 1.8.18 because that's the newest available on jsFiddle, but I have also tested with 1.8.20 and reproduced the problem there.

[mikesherov]

Thanks for contributing! Unfortunately, jQuery doesn't support SVG: ​http://docs.jquery.com/Won't_Fix#SVG.2FXML.2FVML_Bugs and as such, I'm marking this as won't fix.