ID selector with escaped characters returns two items in IE8, 1 in other browsers

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See here for an example that shows it working in IE9+, but failing in IE8: ​http://jsfiddle.net/daemonic/7yHu3/

Happens in 1.10.1 and 1.10.2.

In IE 7,9 and 10, it returns 1 item matching the ID In IE8, it 2 items matching the ID

If you switch it to use jquery 1.9.1, it returns 1 in all versions of the browser.

[gibson042]

I observe the expected results in all versions of Internet Explorer on BrowserStack. Have you disabled all extensions to confirm behavior?

[daemonic]

After double checking the machine, it turns out it had the RC1 (as did the other machine I was testing against). Testing it on a third machine with release version of IE8 worked fine.

We can close this, since upgrading the actual final version of IE8 solves the problem.